Send Email Alerts from Synology and QNAP NAS with mySMTP

SMTP settings

Setting	Value
Server	Your dedicated hostname from the setup email, e.g. `relayxx.mysmtp.com`
Port	587
Security	STARTTLS
Authentication	SMTP username and password from mySMTP

Server (shared IP, DK only) | mail.mysmtp.com / Shared IP plans are only available to customers in Denmark.

Use the exact relay hostname from your setup email. relayxx.mysmtp.com is only an example.

Open Notification settings

Open Control Panel > Notification > Email.

Add a custom SMTP provider

Enter the SMTP settings

SMTP server: your relay hostname (e.g. relayxx.mysmtp.com).
SMTP port: 587.
Secure connection (SSL/TLS): select STARTTLS.
Username: your mySMTP SMTP username.
Password: your mySMTP SMTP password.
Sender email: the address alerts should appear from (must be a verified domain).
Click Save.

Send a test email

Click Send a test email and check the recipient inbox. Adjust the sender address or recipient if needed.

Open Notification Center

Open Control Panel > System > Notification Center.

Add an SMTP service

Enter the SMTP settings

Send a test email

Click Test to send a test message to the configured notification recipient.

Test email fails: double-check the server name is copied exactly from the setup email, and that the username and password are correct.
Connection error on port 587: your network may block it. Try port 2525.
Sender address rejected: make sure the sender email uses a domain authenticated for your mySMTP account. See DNS settings quick explainer.

For more error codes, see Common SMTP errors.