How to send emails with SMTP2GO for TrueNAS Scale

This is an update, to the update from the TrueNAS Core instructions for TrueNAS Scale.

Get SMTP2GO ready

1. Create your SMTP2Go account.
2. Verify your account and domain by adding the DNS records. This will setup SPF and DKIM for you.
3. Add a DNS record for DMARC.
4. Create an SMTP user.
   1. The user is in the format of an email address. You’ll use this in the TrueNAS steps later.
   2. Copy the password.
   3. Make sure to click 'Add user'.

Setup TrueNAS

Log into your TrueNAS web UI:

1. Go to Credentials > Users:
   1. Click on the root user and then edit.
   2. Set the email address to the SMTP2Go user creation step.
2. Go to System > General settings:
3. On Email click 'Settings' and set:
   1. 'From email' to the SMTP2Go user you created.
   2. 'From name' to something meaningful to you.
   3. ‘Outgoing mail server’ to ‘mail.smtp2go.com’
   4. ‘Mail server port’ to ‘2525’
   5. ‘Security’ to ‘TLS (STARTTLS)’
   6. Enable 'SMTP Authentication'
   7. 'Username' to the full email from the SMTP2Go user you created.
   8. 'Password' to the password you created for that user in SMTP2Go.
4. Click 'Save'.
5. Click on the email settings again and click 'Send test email'.
6. You shouldn't get any error and you should successfully receive the email.

Now you can be actively notified about issues with your TrueNAS server such as disk errors, running out of space and other issues.