GoHighLevel Email Verification in 2026: New CSV Import Feature vs External Verifiers (Costs & Agency Workflow)

Quick answer: Does GoHighLevel support email verification during CSV imports?

Yes. GoHighLevel introduced an optional email verification step within its contact CSV import workflow, documented on October 21, 2026. Users can enable verification before starting an import and monitor processing through Bulk Actions. HighLevel also supports verification before sending emails through LC Email and Mailgun. Its published LC Email verification rate is $2.50 per 1,000 checks.

For agencies that prefer preparing contact data independently, external verification services such as RefreshList offer an alternative. You can assess a CSV, identify duplicates and malformed addresses, verify eligible emails, and preserve original CRM columns before importing contacts into HighLevel.

The better option depends on your budget, client-management workflow, email provider, and whether you need verification to happen directly inside the CRM.

There's something I've always found interesting about CRM migrations.

Businesses spend considerable time choosing the right platform, building automation workflows, organizing sales pipelines, and designing email campaigns.

But when it comes to importing contact data, many teams simply upload whatever spreadsheet they have.

Sometimes that spreadsheet contains 500 addresses.

Sometimes it contains 100,000.

And sometimes nobody knows how many of those addresses are still usable.

Imagine running a digital marketing agency with 15 clients using GoHighLevel.

Every month, your team imports new contacts from website forms, landing pages, ecommerce stores, event registrations, and existing CRM systems.

Your clients expect those contacts to move smoothly into their marketing workflows.

But some addresses are duplicated. Others belong to inactive mailboxes. A few contain obvious formatting errors.

Then an email campaign starts, and the bounce notifications arrive.

Now the agency has two problems.

First, it needs to improve the quality of the imported database.

Second, it must understand how much it is paying to verify those addresses across multiple client accounts.

GoHighLevel's new import-time email verification feature is particularly relevant here.

It makes verification more convenient.

But does that mean every agency should stop using external verification tools?

Not necessarily.

I believe the smarter decision starts with understanding what the native feature actually does, how billing works, and whether independent list preparation can reduce unnecessary spending without damaging CRM records.

Let's examine those questions carefully.

1. What's New in GoHighLevel Email Verification in October 2026?

GoHighLevel already offered email verification before the October update.

Its LC Email and Mailgun verification functionality could check addresses before sending, helping identify invalid recipients.

It also supported optional re-verification of previously checked addresses.

What changed on October 21, 2026, was the introduction of an additional verification option directly within the contact-import workflow.

Email verification is now part of the CSV import process

When importing contacts, HighLevel now provides an optional email verification checkbox during the final import step.

This allows users to initiate contact import and email verification within the same workflow.

Previously, an agency might have needed to import contacts first and then rely on an existing verification workflow or separate service.

The new feature makes that process more convenient.

Verification progress appears in Bulk Actions

After starting an import with verification enabled, users can navigate to:

Contacts > Bulk Actions

HighLevel documents two principal verification-processing statuses:

One detail is particularly important.

Completed does not mean every email passed verification.

It simply means the processing operation has finished.

Does HighLevel automatically remove invalid contacts during import?

This is where I would be cautious.

HighLevel's October 21 documentation confirms that users can initiate verification during contact import.

However, it does not conclusively establish whether invalid email addresses are automatically excluded from the imported contact database.

It also does not establish a dedicated downloadable report format for the new verification step.

Therefore, I would not assume that selecting the checkbox automatically prevents every invalid record from entering the CRM.

Before relying on that behavior, test the feature with a small authorised CSV and inspect the results.

Official source: HighLevel: How to Verify Emails During Contact Import

2. How to Verify Contacts During a GoHighLevel CSV Import

Let's walk through the new workflow.

Suppose you're importing 10,000 customer records into a client's GoHighLevel account.

You have a CSV containing names, email addresses, phone numbers, tags, and relevant custom fields.

Here's how I would prepare the import.

Step 1: Open the correct HighLevel sub-account

Sign in to GoHighLevel and select the client sub-account where the contacts should be imported.

For agencies managing several clients, this matters more than it might seem.

Importing the right file into the wrong sub-account can create a much larger problem than having a few invalid addresses.

Always confirm the account before continuing.

Step 2: Navigate to Contacts

Open the Contacts section.

Select the import option to begin the contact-import workflow.

Step 3: Upload your CSV

Choose the CSV containing the contacts you want to import.

Before uploading, confirm that:

• The file has a header row.

• The email addresses are in the intended column.

• Contact identifiers and custom fields are preserved.

• Duplicates and obvious formatting issues have been reviewed.

• The file meets HighLevel's current upload requirements.

HighLevel's documentation confirms CSV support, although some of its import articles currently describe different file-size limits.

I would therefore confirm the limit displayed in the live import interface, particularly for large files.

Step 4: Choose how contacts should be imported

HighLevel supports different import behaviors, including creating contacts, updating existing records, or combining creation and updates.

This decision deserves careful attention.

If you're importing new contacts, creating records may be appropriate.

If you're updating existing customer information, you must ensure HighLevel matches the correct records.

Its current contact-import documentation describes matching using Contact ID, email, and phone, subject to the relevant import and deduplication settings.

Step 5: Map the CSV columns

HighLevel asks you to match incoming spreadsheet columns to corresponding CRM fields.

For example:

Review these mappings carefully.

A successful import does not guarantee that the data landed in the correct fields.

Step 6: Enable email verification

At the final step, locate the new email verification checkbox.

Select it if you want HighLevel to initiate verification as part of the import.

Review the remaining settings and confirmations.

Step 7: Start the import

Begin the bulk import.

HighLevel will initiate the verification workflow when the checkbox is enabled.

Step 8: Monitor the process

Navigate to Contacts > Bulk Actions.

Find the relevant operation and check its status.

Review any available statistics, errors, or result details after processing finishes.

Step 9: Inspect the imported contacts

I would test several contact records manually.

Check whether the correct names, email addresses, tags, and custom fields were imported.

Also inspect the verification information and confirm how the account handles invalid addresses.

My recommendation: Test the new verification option with a small sample before applying it to an important client database.

Official instructions: HighLevel CSV Import Verification Guide

3. How Much Does GoHighLevel Email Verification Cost in 2026?

This is where the commercial comparison becomes interesting.

HighLevel's published LC Email verification price is:

$2.50 per 1,000 email verifications.

That equals $0.0025 per check.

Using that rate, the estimated costs are:

These values are arithmetic calculations from HighLevel's published LC Email verification rate.

They assume the specified number of billable verifications.

The actual charge can depend on the account's email provider, verification configuration, and the number of checks performed.

The new import-time feature's documentation does not independently specify a different rate, so agencies should confirm the applicable billing source before assuming every import uses LC Email's pricing.

Sources: HighLevel Pricing Guide and LC Email Verification and Rebilling.

What if you're using Mailgun instead of LC Email?

HighLevel also supports Mailgun-based email verification.

Its Mailgun verification documentation lists a provider-side rate of $0.012 per email, equivalent to $12 per 1,000 verifications.

That would represent:

These are calculations based on the rate documented by HighLevel.

However, Mailgun verification is billed through the connected Mailgun account, and actual provider prices may change.

I would check the live Mailgun pricing and the client's specific setup before preparing a quotation.

Official source: HighLevel: Email Verification From Mailgun

Sending costs and verification costs are different

HighLevel separately publishes LC Email sending rates.

For example, its documentation lists an email-sending rate of $0.675 per 1,000 emails.

That is not the same as its $2.50 per 1,000 verification rate.

Sending and verification can generate separate charges.

When reviewing an agency's email expenses, I would make sure these costs are not mixed together.

4. GoHighLevel vs RefreshList: Comparing Email Verification Costs

Now let's compare HighLevel's published LC Email verification rate with RefreshList's advertised credit packages.

RefreshList uses a pay-as-you-go model.

You purchase a fixed number of verification credits without requiring a monthly subscription for the verification service.

Paid credits do not expire.

Its current public pricing includes $24 for 10,000 checks, $79 for 50,000, and $149 for 100,000.

Pricing comparison

Sources: HighLevel Pricing and RefreshList.

At 10,000 checks, the difference is almost negligible.

RefreshList's package is only $1 cheaper.

I certainly wouldn't recommend introducing an entirely new verification process just to save one dollar.

But the difference becomes more noticeable at higher volumes.

At 50,000 checks, RefreshList's listed package costs approximately 37% less.

At 100,000 checks, it costs approximately 40% less.

Does this mean RefreshList is always cheaper?

No.

The comparison assumes the same number of billable checks and uses the published LC Email rate.

HighLevel also offers the convenience of native CRM integration.

RefreshList requires an independent CSV workflow.

The products have different billing models and capabilities, and no independent accuracy-equivalence test is presented here.

The advantage of native HighLevel verification

HighLevel can initiate verification within its existing CRM workflow.

That means fewer separate tools and less manual file handling.

For an agency with limited verification volume, convenience may outweigh a small price difference.

The advantage of external CSV verification

An independent verifier may be useful when you need to assess the database before importing it.

It may also be useful if your agency wants verification results in a portable CSV format or prefers purchasing one-time credits separately from its CRM expenses.

My assessment: The decision becomes more interesting as verification volume increases. At small volumes, HighLevel's convenience may be more valuable than the price difference. At higher volumes, comparing independent verification costs is worthwhile.

5. HighLevel Native Verification vs External Tools: Which Should You Choose?

I would separate this decision into workflow requirements rather than making it a contest between brands.

The best option depends on the actual job.

Choose HighLevel when you want simplicity

If your contacts are already managed in HighLevel, the agency has a suitable email provider configured, and you want verification to work directly within the CRM, the native feature makes sense.

Consider external verification for independent list preparation

If you regularly import large CSV files from other CRMs, marketing platforms, or lead-generation workflows, an external service can help identify data problems before importing those contacts.

Consider external verification when portability matters

Suppose your agency manages contact data for several approved marketing systems.

You may prefer retaining a standalone verification report that can be reconciled with the original database.

Don't pay twice unnecessarily

If a contact has already been verified externally, review whether HighLevel's automatic pre-send verification will also run.

An external result does not automatically become HighLevel's native verification status.

You should not disable a useful protection simply to reduce costs without understanding the implications.

My recommendation: Choose the workflow that fits the client's operational requirements, not just the lowest advertised price.

6. How to Prepare a GoHighLevel CSV Without Losing CRM Data

This is probably the most important part of the entire process.

Imagine your agency manages an established customer database.

Each contact might contain:

• A customer identifier.

• First and last name.

• Company information.

• Lead source.

• Tags.

• Assigned sales representative.

• Custom fields.

• Previous opt-out information.

• Account or opportunity relationships.

If you send only the email addresses for verification and lose the connection to those records, you create unnecessary work.

Worse, you might update the wrong CRM contact.

I would avoid that by keeping the source data intact.

First, create a backup

If you're cleaning an existing HighLevel audience, export the relevant contacts.

HighLevel's official export workflow allows you to select contacts, configure visible fields, and download the results from Bulk Actions.

Its current documentation also notes that completed export download links remain available for 30 days.

For agencies, exports must be performed separately for each sub-account.

Source: HighLevel: Export Contacts to CSV

Preserve important fields

I would retain the following information where it is relevant to the task.

Not every field needs to be uploaded to the external verification provider.

In fact, I would usually prefer sharing only the email address and a stable identifier when possible.

The complete source record can remain in your approved business environment.

Use a stable identifier

Consider this fictional CSV structure:

ContactID,Email,FirstName,Company,Lead_Source
C-1001,alex@example.com,Alex,Example Labs,Website
C-1002,maya@example.org,Maya,Example Digital,Webinar
C-1003,jordan@example.net,Jordan,Example Systems,Referral

The addresses use reserved example domains and are not real customers or verified mailboxes.

The important field is Contact_ID.

If you receive an external verification result, you can match it back to the correct contact.

Pay attention to existing contacts

HighLevel allows CSV imports to create new records or update existing ones.

For updates, the documented matching behavior can use Contact ID, email, and phone, depending on the configured deduplication rules.

If a record already exists, careless imports could replace information you intended to preserve.

I would test with a few controlled records before performing an important update.

Watch the Do Not Disturb field

HighLevel's CSV import documentation specifically warns that importing its DND field can apply Do Not Disturb across multiple communication channels.

That may be broader than the restriction you intended.

Keep channel-specific permission information separate and confirm the intended handling before importing.

My principle: Cleaning email addresses should never accidentally change a customer's communication preferences.

7. How to Check a HighLevel CSV Using RefreshList

If you prefer verifying contacts before importing them into GoHighLevel, RefreshList offers a separate CSV-based workflow.

Its public website currently advertises:

• A browser-based structural list assessment.

• Duplicate and malformed-row detection before paid verification.

• 100 one-time free verification checks.

• Preservation of original CSV columns.

• Separate valid, invalid, and unknown results.

• Non-expiring paid verification credits.

Source: RefreshList: How Verification Works.

This process does not require a native GoHighLevel integration.

Step 1: Save your source CSV

Keep your original file unchanged.

For example:

clientahighlevel_original.csv

Create a separate working file if needed.

Step 2: Run a structural assessment

Open RefreshList's free list assessment.

The tool examines CSV structure, identifies duplicates and malformed records, and calculates the number of eligible unique addresses.

Its structural inspection runs locally in the browser.

That means this initial assessment does not itself perform mailbox verification.

Step 3: Review the findings

Suppose your CSV contains 10,000 rows.

The assessment identifies:

This is a hypothetical example.

Instead of immediately verifying 10,000 addresses, the agency now knows that 9,300 unique eligible addresses remain.

Step 4: Approve mailbox verification

If you decide additional verification is necessary, use the authenticated RefreshList workspace to submit eligible addresses.

RefreshList advertises 100 one-time free checks for introductory use.

Larger workloads require sufficient paid credits.

Step 5: Review the classifications

RefreshList reports valid, invalid, and unknown outcomes.

Do not automatically treat unknown results as confirmed failures.

A server may be unavailable, restrict verification attempts, or behave in a way that prevents conclusive mailbox-level checks.

Step 6: Download the report

RefreshList provides categorized result downloads and a full report.

The full report preserves original CSV columns with the relevant verification information.

That can help the agency reconnect results to contact IDs, customer names, and client-specific fields.

Step 7: Prepare a controlled HighLevel import

Use the reviewed results to create a suitable import file.

Keep invalid and uncertain records separate according to your documented risk policy.

Preserve required consent and suppression information.

Map the approved records into HighLevel carefully.

Important limitation

RefreshList's workflow is independent.

It does not automatically update HighLevel contact records or native verification statuses through a GoHighLevel integration.

If your agency wants to update HighLevel based on external results, it must use a supported import or other authorised integration process.

Importing 10,000 contacts into GoHighLevel?

Assess your CSV with RefreshList before importing. Identify duplicates and formatting issues, review the number of eligible checks, and keep your original contact information connected.

8. What Do Valid, Invalid, Catch-All, and Unknown Email Results Mean?

One of the biggest mistakes I see in verification discussions is treating all tools as though they use identical classifications.

They don't.

Different systems may use different evidence and different labels.

HighLevel's LC Email documentation describes contact verification states such as Not Verified, Invalid, and Verified.

An independent verifier may additionally return an unknown outcome or provide catch-all-related information.

Here's how I would interpret the general categories.

Valid does not guarantee delivery

A technically valid email address may still bounce later.

Mailboxes are deactivated.

Servers change their configurations.

Messages may be rejected because of sender reputation, authentication problems, or receiving policies.

Invalid doesn't always mean delete the customer record

Suppose a customer has made several purchases but their previous email address is no longer active.

The address may be unusable.

But the customer's purchase information and other legitimately retained records may still matter.

I would exclude the invalid address from sending rather than automatically deleting the entire customer relationship.

Unknown should remain unknown

A verification service may fail to reach a conclusive decision.

That isn't the same as proving the mailbox doesn't exist.

I prefer reporting uncertainty clearly rather than converting it into an artificial pass or fail.

Verification doesn't establish consent

This deserves its own reminder.

A valid address does not mean the recipient agreed to receive marketing.

Your agency must separately preserve permission information, opt-outs, suppression records, and applicable communication restrictions.

9. Managing Email Verification Across Multiple GoHighLevel Client Accounts

Let's imagine an agency managing ten client sub-accounts.

Each client has different contact sources, campaign schedules, and email-verification needs.

This creates a challenge that goes beyond finding the cheapest verification service.

You need to keep client data, billing, and decision-making separate.

Create a client-specific verification process

I would assign each verification job a clear internal identifier.

For example:

CLIENT-A-2026-10-29

CLIENT-B-2026-10-29

Each job should retain information about the source file, eligible records, verification date, cost, and final outcome.

Don't combine client databases without a reason

Even if combining several lists produces a better credit-package price, client confidentiality and access boundaries must remain intact.

Use appropriate workspace controls and approved processing arrangements.

If an external verification service uses a shared credit balance, maintain a separate accounting record for each client.

Track the actual verification cost

A useful agency report might contain:

This is an illustrative reporting structure.

It helps an agency explain the work performed and the charges associated with each client.

HighLevel supports verification rebilling

Another point worth considering is that HighLevel offers rebilling functionality for eligible agencies.

Its documentation explains that rebilling capabilities depend on the subscription tier.

Agencies on higher-tier plans can pass supported usage charges to clients under the applicable pricing and markup arrangements.

This can reduce the administrative work associated with client invoicing.

Source: HighLevel: Enable and Rebill LC Email Verification

Monitor automatic re-verification

HighLevel also supports an optional 90-day re-verification setting.

When configured, previously verified addresses may be checked again when their results have aged beyond the specified period and another send is attempted.

Each verification can generate a charge.

For agencies managing large databases, this recurring usage matters.

I would review whether automatic re-verification is enabled in each relevant sub-account and monitor the charges in the agency wallet.

My recommendation: Treat verification as an accountable client operation, not an invisible background expense.

10. Worked Example: Cleaning 50,000 Contacts Before a HighLevel Import

Let's put the entire process into a practical scenario.

Imagine an agency onboarding a client that uses an older CRM.

The client's exported database contains 50,000 contact records.

The agency wants to migrate the records into GoHighLevel and prepare an appropriate email-marketing audience.

Stage 1: Protect the original data

The agency saves the original export.

It preserves contact IDs, names, source information, tags, and relevant suppression records.

Stage 2: Run structural assessment

The agency finds:

These figures are fictional, and the categories are assumed not to overlap.

Stage 3: Compare verification costs

If HighLevel's LC Email rate applies to the 45,000 billable verification checks:

45,000 / 1,000 × $2.50 = $112.50

RefreshList's published 50,000-credit package costs $79.

The nominal upfront difference is $33.50.

If all 45,000 eligible checks are completed and billed, RefreshList would retain 5,000 unused credits for later verification work.

This comparison does not include implementation time, provider differences, taxes, or other account charges.

Stage 4: Verify the eligible records

Suppose the external verification returns:

These are hypothetical results, not a performance claim about RefreshList.

Stage 5: Preserve the source information

The agency reconnects each outcome to the original CRM contact identifier.

Existing customer information remains attached to the correct records.

Stage 6: Review campaign eligibility

The agency separates invalid addresses from the proposed email audience.

Unknown results receive additional review.

Previously unsubscribed contacts remain excluded, regardless of verification results.

Stage 7: Import into GoHighLevel

The agency prepares the intended contact records.

It reviews the create-versus-update settings, column mappings, tags, and custom fields.

It also confirms whether the new native email verification checkbox should be enabled or disabled.

Stage 8: Reconcile the results

After importing, the team checks Bulk Actions.

It reviews successful and failed records, the actual number of imported contacts, and whether the intended custom fields remain intact.

If certain rows failed, the team corrects those records and reimports only the affected rows where appropriate.

Stage 9: Review billing

Finally, the agency compares the actual verification charges with its estimate.

If HighLevel or the connected email provider performed additional checks later, those charges should be evaluated separately.

What I like about this workflow is that it makes cost, data quality, and CRM preservation visible rather than assuming the import was successful simply because the progress bar completed.

11. Common GoHighLevel Email Verification Mistakes to Avoid

Mistake 1: Assuming email verification automatically removes invalid contacts during import

The October 21 documentation confirms verification can be initiated during import, but it does not establish automatic exclusion behavior.

Test that behavior before relying on it.

Mistake 2: Confusing LC Email and Mailgun pricing

HighLevel's published LC Email verification rate differs from the Mailgun provider rate described in its documentation.

Confirm which service is actually processing the checks.

Mistake 3: Uploading a CSV without reviewing duplicate records

Duplicates can create confusion during record matching and updates.

Review the source data before importing.

Mistake 4: Losing custom fields during cleaning

A verification report containing only addresses is often insufficient for a complex CRM migration.

Preserve reliable identifiers and necessary source columns.

Mistake 5: Importing into the wrong sub-account

Agencies managing multiple clients should verify the selected location before starting any bulk import.

Mistake 6: Accidentally changing DND settings

HighLevel documents that importing a DND field can apply restrictions across communication channels.

Review the intended effect carefully.

Mistake 7: Running external and native verification without reviewing the costs

An external result doesn't automatically replace HighLevel's internal verification state.

Understand whether additional checks will occur before sending.

Mistake 8: Assuming a verified address cannot bounce

Verification does not guarantee inbox placement or successful delivery.

Mistake 9: Reimporting the entire file after a partial failure

If most records imported successfully, blindly repeating the entire import can create unnecessary processing and update risks.

Use the Bulk Actions error report to identify the affected records.

Mistake 10: Treating verification as permission to send marketing

A technically valid address does not establish consent.

Maintain permission and suppression records separately.

12. GoHighLevel Email Verification Checklist for Agencies

Before importing or verifying a large contact database, I recommend checking the following:

• I selected the correct GoHighLevel client sub-account.

• I preserved the original source CSV.

• I retained relevant contact IDs, tags, and custom fields.

• I reviewed duplicates, malformed addresses, and missing values.

• I separated technical verification from marketing eligibility.

• I confirmed which email provider processes verification.

• I understand the applicable per-check rate.

• I reviewed whether automatic pre-send verification is enabled.

• I checked any 90-day re-verification setting.

• I compared native verification with external credit-pack costs.

• I reviewed the CSV create-versus-update settings.

• I mapped the email and identifier fields correctly.

• I checked DND and suppression handling.

• I tested the workflow with a small sample.

• I confirmed how invalid and uncertain results are handled.

• I inspected Bulk Actions after import.

• I reviewed the final contact counts and unexpected changes.

• I documented the actual verification charges by client.

A checklist won't guarantee perfect deliverability, but it helps make the operation more predictable and easier to audit.

13. Frequently Asked Questions About GoHighLevel Email Verification

Does GoHighLevel automatically verify email addresses?

GoHighLevel supports verification before sending through configured email services. It also introduced an optional verification checkbox during contact CSV import in October 2026. Whether a particular address is checked automatically depends on the enabled settings and workflow.

Is email verification available during CSV import in HighLevel?

Yes. HighLevel's October 21, 2026 documentation confirms that users can enable email verification at the final contact-import step and monitor processing through Bulk Actions.

How much does GoHighLevel email verification cost?

HighLevel publishes an LC Email verification rate of $2.50 per 1,000 checks. Mailgun-based verification uses separate provider-side pricing.

How much does it cost to verify 10,000 emails in HighLevel?

At the published LC Email rate, 10,000 billable verifications cost $25. Confirm that this rate applies to the email provider and verification workflow used by your account.

How much does it cost to verify 100,000 emails?

At $2.50 per 1,000, 100,000 checks would cost $250. RefreshList currently publishes a separate 100,000-credit package for $149.

Is RefreshList cheaper than HighLevel email verification?

At the published comparison volumes, RefreshList's packages cost less than the equivalent LC Email rate calculations. However, the total value depends on client workflow, provider settings, native integration, and actual billable checks.

Does HighLevel automatically remove invalid emails during import?

The new October 2026 documentation does not conclusively confirm automatic exclusion of invalid contacts. Users should test the import behavior and inspect available results rather than making that assumption.

Can I verify GoHighLevel contacts before importing them?

Yes. You can prepare and verify a CSV through an independent service, then import the reviewed records into HighLevel. Preserve the original identifiers and relevant fields.

Does RefreshList integrate directly with GoHighLevel?

The workflow described in this guide uses CSV export, assessment, verification, and import. No native RefreshList-GoHighLevel integration is claimed.

Can I preserve tags and custom fields when verifying externally?

Yes, provided the selected verification workflow preserves the original columns or supplies a reliable identifier for matching results back to the source file. RefreshList specifically advertises row-preserving result exports.

How do I check verification status in HighLevel?

HighLevel's LC Email documentation describes verification information in contact details. For import-time verification, the new feature's processing progress can be monitored through Contacts > Bulk Actions.

Does HighLevel reverify emails every 90 days?

HighLevel supports an optional 90-day re-verification feature. It should not be assumed to be enabled for every account. Check the actual sub-account settings.

Can agencies rebill clients for email verification?

HighLevel supports verification rebilling on eligible subscription tiers, subject to the plan's supported markup arrangements.

What is the difference between LC Email and Mailgun verification?

LC Email is HighLevel's own email service with published verification rates. Mailgun-based verification uses the connected Mailgun service and its separate provider billing. Both can support verification, but costs and account configuration differ.

What does an unknown verification result mean?

Unknown generally means a verification provider could not reach a conclusive determination. It should not automatically be treated as confirmed valid or invalid.

Does a valid verification result guarantee inbox delivery?

No. Successful delivery also depends on sender authentication, reputation, mailbox changes, receiving-server behavior, content, and other factors.

Can I verify emails for free before importing into HighLevel?

Yes, some services provide limited introductory verification allowances. RefreshList currently advertises a free structural CSV assessment and 100 one-time free mailbox verification checks.

14. Final Verdict: Use Native Verification for Convenience, External Tools When the Workflow Justifies It

After reviewing HighLevel's new import-time verification capability, I think the most important conclusion is fairly straightforward.

GoHighLevel already provides a legitimate email verification solution.

The October 2026 update makes that solution easier to use during contact imports.

For agencies that want verification to happen inside their CRM, this is a meaningful improvement.

They can initiate the process without creating a separate verification workflow and can monitor the operation through Bulk Actions.

That convenience has value.

But convenience is not the only consideration.

An agency regularly importing large contact databases may want to assess the file before sending it into HighLevel.

It may also prefer to maintain independent verification reports, preserve the original spreadsheet structure, or purchase credits separately from its CRM billing.

Those are reasonable reasons to consider an external verification service.

RefreshList offers that CSV-based alternative.

Its free structural assessment can identify duplicates and malformed rows before verification.

It currently advertises 100 one-time free verification checks, preservation of original CSV columns, and non-expiring pay-as-you-go credits.

Its 100,000-credit package costs $149, compared with $250 for 100,000 checks calculated at HighLevel's published LC Email rate.

But I wouldn't select a verification service solely because one price is lower.

I would ask whether it fits the agency's actual process.

Does the client need verification before importing?

Are HighLevel's native statuses and automatic protections important?

Will the agency reuse the verification report elsewhere?

How much time will the alternative workflow require?

And will the original contact information remain intact?

Those questions lead to a more useful decision than any generic cheapest-tool ranking.

Importing 10,000 contacts into GoHighLevel?

Assess your email list with RefreshList.

Check for duplicates and formatting issues, understand your eligible verification count, and preserve your original CRM data before purchasing additional checks.

You can also explore How RefreshList Verification Works and its free tools.

My final recommendation is simple.

Verify the email address. Preserve the customer record. Understand the cost.

Because successful CRM management isn't just about adding contacts quickly.

It's about maintaining information your team can actually trust.

15. Sources and Editorial Methodology

This article was prepared using official HighLevel documentation and RefreshList's publicly available product information reviewed on October 29, 2026.

Primary sources

1. HighLevel: How to Verify Emails During Contact Import

1. HighLevel: Pricing and Billing Guide

1. HighLevel: Enable and Rebill LC Email Verification

1. HighLevel: Email Verification From Mailgun

1. HighLevel: Import Contacts Using a CSV

1. HighLevel: Import Contacts and Opportunities

1. HighLevel: Export Contacts to CSV

1. RefreshList: Email List Verification

1. RefreshList: How Verification Works

1. RefreshList: Free Email Tools

Research methodology: The HighLevel cost calculations use the published LC Email rate of $2.50 per 1,000 verifications. RefreshList costs use its publicly advertised one-time credit packages.

The comparison assumes the indicated number of billable checks and does not include taxes, provider-specific charges, client rebilling markups, implementation effort, or negotiated pricing.

The sample contact records, worked examples, verification results, and agency scenarios are illustrative. No controlled accuracy, speed, or deliverability benchmark was performed.

Disclosure: RefreshList is presented as an optional independent CSV verification service. No native GoHighLevel integration, guaranteed cost savings, or guaranteed improvement in deliverability is claimed.

Interfaces, pricing, verification rules, and billing arrangements may change. Confirm current account-specific settings and service terms before processing real customer information.