I’m building a little web server with Rust and as part of it, I’m going to need to send some e-mails to my users. I found a few services that offer an e-mail API with a free tier, and decided to go with Brevo. Authenticating our domain In order for our e-mails to reach our users’ inboxes, we need to correctly configure our DKIM and DMARC records so they can be used by Brevo. We can’t authenticate e-mails from free email providers like Gmail. So, before we can authenticate our domain, ...