← Frankys Web GitHub Contact

Frankys Web Mailtools

Check and understand email configurations

Home

Checks

Overview Domain Check Spoofing Protection Check SMTP Test Exchange Server Check

DNS DNS Lookup DNSSEC Check CAA Check MX Lookup

Email Email Header Analyzer Blocklist Check

Email authentication SPF Check DMARC Analyzer DKIM Lookup MTA-STS and TLS-RPT Check DANE Check BIMI Check

TLS & certificates Certificate Check

Client configuration Autodiscover Check Autoconfig Check IMAP/POP3/SMTP TLS Test

Generators

Generators SPF Generator DMARC Generator MTA-STS Generator TLS-RPT Generator

DE Log in

Log in

Email address

Password

Forgot your password?

No account yet? Register

About Mailtools

Free diagnostic tools for email deliverability. No sign-up required. Results are snapshots taken at query time, from public DNS and direct SMTP and TLS connection tests.

Support

Any support is much appreciated, the easy way is via PayPal or my Amazon wish list:

Copyright © 2026 by FrankysWeb · Mailtools v1.0.4 (f15c72d90-20260918T022007Z) Changelog · Imprint · Privacy