Jafner.net/homelab/sellswords/protonmail
..
README.md

Configure SMTP Submission via ProtonMail

Key Value
From Address noreply@jafner.net
From Name No Reply
Protocol SMTP
Mail Server smtp.gmail.com
Mail Server Port 465
Security SSL (Implicit TLS)
SMTP Authentication Yes
Username noreply@jafner.net
Password Create a unique Application Password (see below)

Note: As of now, ProtonMail's SMTP submission feature is restricted to Proton for Business, Visionary, and Family plans. Additionally, new accounts must submit a support ticket articulating their use-case and domains to add in order to get SMTP submission enabled for their account.

Create a Token

  1. To get a token, navigate to the ProtonMail Settings -> IMAP/SMTP, then click "Generate token".
  2. Set the "Token name" to the service that will be sending emails.
  3. Set the "Email address" to "noreply@jafner.net".

References

  1. ProtonMail Support - How to set up SMTP to use business applications or devices with Proton Mail