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My Notification Documentation

tags: homelab

For this project, I’ve seen options between Discord, SMS, and email. I ended up with email as it seems like it’s the best for my use case: open industry standard, has been around forever, and isn’t going anywhere.

Problem

The guides are only set for Gmail. Why? They already offer a standard SMTP interface. I use ProtonMail - and they don’t.

Fix

I’ve done my research and here are the options that I found:

  • ProtonMail Bridge - makes sense, I have the prerequisites that were needed
  • SMTP Relay Service - I have an AWS account for my homelab and there’s AWS SES for cheap!
  • Gmail - BIG NOPE!

It looks like my ProtonMail subscription already supports SMTP Relay, might as well use the one that already exists instead of reinventing the wheel.

Main Setup

Protonmail SMTP Relay

Go to Settings > Proton Mail > IMAP/SMTP > SMTP submission > Generate token > Input Token name

It is advisable to use a different token for each service. When a token gets compromised, you’ll only need to change that single one.

Per App Setup

OPNSense

Go to Services > Monit > Settings:

  • Enable Monit
  • Polling Interval - this is not so important that I’d need to put it to 30 seconds. Defaulting to default(120)