Referrer Spam Remover - Remove spam bots from your Google Analytics data
TestSubject - Test how your email subject line displays on mobile devices.
Spam Check - A free JSON API to check your email messages' spam scores
analyze.email - Test the spam-y-ness of your emails
CanIPhish - Blend social engineering with real-world phishing simulations to train your users how to detect the most advanced threats.All in a completely self-service, fast, free and modern SaaS platform.
Rename Email - Easily change the subject of any email, by cloudHQ