This article applies as of PRTG 22
How to use a Gmail address for SMTP delivery
Important: As of May 30, 2022, third-party apps and devices can no longer use a user name and password to log in to your Google Account. If you want to use a Gmail address for SMTP delivery as of May 30, 2022, an application password is required. For more information, see Less secure apps & your Google Account.
If you want to use a Gmail address for SMTP delivery, meet the requirements and follow the instructions below.
Requirements
- A Gmail business account (Google Workspace) or free Gmail account.
- 2-Step Verification must be enabled for the Gmail account that is used as SMTP Relay. For more information, see Turn on 2-Step Verification.
- The firewall settings on the PRTG core server system must allow connections on port 465 or 587.
Enter Gmail notification delivery settings in PRTG
Note: As reference, you can see the configuration with the user name johnqpublic below. Adjust the settings according to your configuration if required.
- In the PRTG web interface, select Setup | System Administration | Notification Delivery from the main menu.
- Enter the required information and click Test SMTP Settings if you want to test the configuration or click Save to directly save your settings.

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Delivery Mechanism | Use one SMTP relay server (recommended in LANs/NATs) |
Sender Email Address | [email protected] |
Sender Name | PRTG Network Monitor |
HELO Ident | prtgserver.domain.tld (optional - make sure that it has no space in it.) |
SMTP Relay Server | smtp.gmail.com |
SMTP Relay Port | 587 or 465 |
SMTP Relay Authentication | Use standard SMTP authentication |
SMTP Relay User Name | [email protected] |
SMTP Relay Password | Enter the Google app password. For more information, see the second Note below. |
Connection Security | Use SSL/TLS if the server supports it |
SSL Method | TLS 1.2 |
Notes:
- Make sure you replace johnqpublic in the email address that you use as Sender Email Address and SMTP Relay User Name with your own Gmail user name. If you use a Google Workspace account, enter [email protected] as Sender Email Address and SMTP Relay User Name instead.
- For more information, about how to create an application password, see Sign in with App Passwords.
Troubleshooting
To test the new settings, open Setup | Account Settings | Notification Templates in the PRTG web interface, select an email notification, and click Test SMTP Settings. PRTG will try to send an email immediately.
If you have any problems sending emails, please check the PRTG Logs for respective entries. Make sure your firewall settings allow a connection on port 465 or 587.
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