Email Servers

• Postal
• Docker Mailserver
• Mailcow
• Mailu
• Dovecot
• Postfix
• ISPmail
• How to set up a mail server on the cloud for free
• Free mail server by Axigen

Cloud mail servers

• Mailgun
• Sendgrid
• AWS Simple Email Service
• Google Mail

k3s

• Docker Mailserver on k3s

Moodle

• Sending Custom Emails in Moodle Using the email_to_user() Function
• Sign in with App Passwords
• Troubleshooting PHPmailer

Research

• BitMaelum