Useful tools.
Clear answers.
Prepare a list, convert a spreadsheet, or inspect email and sender signals. Choose a tool below to get started.
Prepare and understand your list
Review list structure, convert files, and plan a careful verification workflow.
RefreshScan
Check a list for formatting issues and duplicates before verification. Your file stays in your browser.
Open tool File converterXLSX to CSV and CSV to XLSX Converter
Convert spreadsheet files locally, with clear format limits and no file upload.
Open tool PlanningEmail Verification Cost Calculator
Estimate verification costs for a list before you start a run.
Open tool Campaign planningBounce Cost Calculator
Model campaign costs from bounces, wasted sends, and sales follow-up time.
Open tool ChecklistEmail List Hygiene Checklist
Use a practical checklist to prepare, verify, and maintain a B2B list.
Open toolCheck email and sender signals
Inspect an address or review the technical signals behind email delivery.
Email Checker
Check an individual email address and understand the result.
Open tool Domain diagnosticsDomain Health Checker
Review key sender-domain configuration signals.
Open tool DNS lookupMX Record Checker
Look up the mail exchange records published for a domain.
Open tool ReputationBlacklist Checker
Check whether a domain or IP appears on supported blocklists.
Open tool ReputationServer Reputation Checker
Review available reputation signals for a mail server.
Open tool Header analysisEmail Header Analyzer
Inspect authentication and routing details in an email header.
Open toolNeed to clean a list?
Start with 100 free email checks. Review the results before deciding what to do next.