Nice tools for sending/receiving emails

These tools help me when it comes to sending and receiving emails. For example, sometimes it is not immediately obvious why an email ends up in the spam folder. I used the tools after an email provider move to check if all domains (MX, SPF etc.) were moved correctly.

forwardemail.net: Email Forwarding (Free)

Create and forward an unlimited amount of email addresses with your domain name. Plus get catch-all, wildcard, and disposable email addresses!
https://forwardemail.net/

mail-tester.com: Test the Spammyness of your Emails (Free)

Checks your outgoing e-mails against the latest rules (SPF, DKIM, Spam-lists etc.) for sending e-mails.
https://www.mail-tester.com/

putsmail.com: Test your HTML emails before sending them! (Free)

Allows to send a HTML emails to your own email address.
https://putsmail.com/