Litmus shows you exactly how your designs look on every platform, across every popular web browser. (And the not-so-popular ones.)
Antideo maintains large database with spam and scam records, IP locations and infected ranges, proxy records and many more. We are keeping our database updated regularly from various sources, as well as collecting some of the data ourselves.
Reacher is an open-source email verification API. Prevent bounced emails with world-class email verification. Free for personal use.
CiNTe Email Validator is free tool to check if the email is valid and actually exist.
DANAConnect is the ideal communication automation platform for the financial ecosystem.