Merge pull request #3576 from vimode/patch-1

Add mailchannels

README.md

@@ -967,6 +967,7 @@ This list results from Pull Requests, reviews, ideas, and work done by 1600+ peo
   * [mail-tester.com](https://www.mail-tester.com) — Test if the email's DNS/SPF/DKIM/DMARC settings are correct, 20 free/month.
   * [dkimvalidator.com](https://dkimvalidator.com/) - Test if the email's DNS/SPF/DKIM/DMARC settings are correct, free service by roundsphere.com
   * [mailcatcher.me](https://mailcatcher.me/) — Catches mail and serves it through a web interface.
+  * [mailchannels.com](https://www.mailchannels.com) - Email API with REST API and SMTP integrations, free for upto 3,000 emails/month.
   * [Mailcheck.ai](https://www.mailcheck.ai/) - Prevent users to sign up with temporary email addresses, 120 requests/hour (~86,400 per month)
   * [Mailchimp](https://mailchimp.com/) — 500 subscribers and 1,000 emails/month free.
   * [Maildroppa](https://maildroppa.com) - Up to 100 subscribers and unlimited emails as well as automations for free.