Free Email ToolsFree email tools for deliverability testing, blacklist monitoring, SPF and DMARC setup, signatures, and SMTP debugging. Run most of them with no signup.
Diagnose delivery problems before your recipients notice. These email deliverability tools test spam scores, watch blacklists, and validate the authentication records receiving servers check.
Send a test email and get a full deliverability report covering spam score, SPF, DKIM, and DMARC.
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Check a domain or IP against major blacklists, then turn on monitoring so listings never stall delivery.
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See which SPF records your domain publishes and whether they comply with RFC 7208, graded instantly.
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Flatten an oversized SPF record into a managed one that stays under the 10-lookup limit, refreshed automatically.
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Send one real test email through your SMTP server and read the full command-by-command transcript.
Open ToolSet up authentication, build signatures, and debug SMTP conversations with free utilities for site owners and developers.
Build a valid SPF TXT record from your sending hosts, IPs, and includes, then copy it into DNS.
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Create a DMARC record with the right policy, reporting, and alignment settings, then copy it into DNS.
Open ToolDesign an HTML signature from 16 templates and paste it into Gmail, Outlook, or Apple Mail.
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Send WordPress mail through Maileroo or any SMTP host with the free Simple SMTP plugin.
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Point your app at throwaway credentials and watch every message accepted, logged, and dropped.
Open Tool
Put a debugger between your app and your SMTP provider and watch both sides of the conversation live.
Open Tool
