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MailGeniusGlockApps
Free

Free to use.

 Freemium

A free spam checker and DNS record checkers are available; full placement testing and…

Web Web
  • Checks SPF, DKIM and DMARC together
  • Flags content that may trigger spam filters
  • Shows inbox or spam placement across major mail providers
  • Checks SPF, DKIM and DMARC alongside blocklists and spam score
  • Requires sending a message to a third-party service
  • Site uses bot verification before loading
  • Full seed-list testing requires a paid plan
  • Aimed at bulk and marketing senders more than individuals
Web application Web application
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Needs internet Needs internet

Checked October 2, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.