SMTP Domain Authentication / Sender Domain Verification

It appears that emails delivered through brevo’s smtp service at are sent through <{username}@{some_number}>, as shown in the screenshot.

My use case requires sending emails as a user under my own domain, for example something like ( Does brevo not have the feature of authenticating custom domain and sending smtp emails through that custom domain?

I was able to find the answer to my own question.

If you own a domain and would like to deliver emails through brevo, you need to authenticate your domain. Here’s brevo’s documentation on how to do that: Authenticate your domain (Brevo code, DKIM, DMARC) – Brevo - Help Center

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Exactly, thanks @kootri for posting here the conclusions of your investigation!