Restrict SMTP user to one domain | Voters

Restrict SMTP user to one domain

planned

Premier Warbler

Allow smtp users to be restricted by domain so that one smtp account cannot be used to send mail from domains on the account.

October 22, 2025

Agathe Brusset

marked this post as

planned

Agathe Brusset

Merged in a post:

Option to set only a specific "From" email address for sending emails

Sunny Marmoset

If would be great if we could have the option to restrict sending to only one specific account or sender email address.

If the API key falls into the wrong hands, the worst that can happen is that someone can send from that one sender and not the entire domain.

April 14, 2026

Agathe Brusset

Hey Sunny Marmoset! Thanks a lot for sharing this — totally makes sense from a security standpoint. We’ll take a closer look at adding an option to restrict sending to a specific From address (so an exposed API key can’t be used across the whole domain) and we’ll follow up once we have an update.

Agathe Brusset

marked this post as

under review