For your content

Grammarly makes sure everything you type is easy to read, effective, and mistake-free.

This article rewriter tool will scan through your content for words that can be replaced with a synonym.

Expand your world with our people-powered translations.

Is it spam?

Have you ever wanted to process the spam score of incoming or outgoing email messages, but didn’t want the hassle of managing SpamAssassin?

Test the Spammyness of your Emails with Mail Tester.

Mailrelay Verifier is an automated tool to verify if your email meets several authentication standards like DKIM and SPF, if it would be classified as spam and even if it has broken links.

Send your HTML to any email address for design testing and debugging

Email verification

Quick and accurate self-service platform verifies email addresses on your terms. Sign up and verify up to 100 email addresses for FREE daily.


Google doesn't offer FBL in a way others do. Here is their way of giving you feedback.


More coming soon. Feel free to leave a comment with your favourite tools.