> For the complete documentation index, see [llms.txt](https://community-test.logicnets.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://community-test.logicnets.com/release-9/platform-documentation/system-administration/system-settings/system-settings-e-mail-tab.md).
# System Settings E-mail Tab
## Description
The *System Configuration* package contains multiple configuration options, which are organized into different tabs that display at the top of the screen. This article contains information about options/configurations located on the *E-mail* tab.
## Configuration Settings
If your application will send email, you can configure the settings on this tab. For more information about email, see [Email Configuration](/release-9/platform-documentation/system-administration/email-configuration.md).
| Setting | Details |
| ------------- | ------------------------------------------------------------------------------------------------------ |
| E-mail server | This is the IP address of the server from which your application will send email. |
| Port number | This is the port number from which the server will send email. |
| From address | This is the email address the system will insert in the "From" line of the email sent from the server. |
With LogicNets v8.4, the system supports sending email without a localhost email relay service like IIS6 or MailEnable. The system still requires a company/cloud-based email server; for example, Amazon SES or Microsoft Exchange. As part of these changes, LogicNets added the following settings to the system configuration:
| Setting | Details |
| ------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| TLS mode: (default: auto) | The system allows for the following SMTP TLS modes:
- Auto: This enables the mode that belongs to the port number identified in the configuration line above.
- None: This means there is no secure connection and typically uses port 25.
- Start TLS: This is secure but not supported by LogicNets. The Internet Engineering Task Force (IETF) introduced Protocol RFC 6409 in 2011 and it typically uses port 587.
- Implicit TLS: This is secure and is supported by LogicNets as of v8.4. The IETF introduced Protocol RFC 8314 in 2018 and it typically uses port 465.
|
| Verify SMTP server certificate (default: enabled) | This checks the validity of the SMTP certificate, and the system only enables this option when TLS is enabled. |
| Verify SMTP server hostname (default: enabled) | This checks whether the SMTP server hostname belongs to the server certificate, and the system only enables this field when TLS is enabled. |
Note: If you use the test mail server on the server itself, the system disables the last two options.
For SMTP Authentication, there are two configuration parameters: SMTP Server Username and SMTP Server Password. Currently, LogicNets only supports plain-text authentication.
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