In this article, you will find out how to enable integration with your custom SMTP server in Synerise which will let you send text messages to your profiles (for example, customers).

## Prerequisites
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You must have your custom SMTP server configured.


## Enabling integration
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1. Go to <img src="/api/docs/image/54176ad07f146575310749eba44b7c2f42c1b327/icons/settings-icon.svg" alt="Settings icon" class="icon">**Settings > Apps & Services**.
2. In the list of integrations, find **SMTP Servers**  and next to the integration name, click **Show**.
    - If there is a connection, you may proceed to [configuring a sender account](/docs/campaign/e-mail/configuring-email-account#configure-a-sender-account)
    - If there is no connection or you want a new one, proceed to the next step.
1. Click **Add connection**.  
    **Result**: A pop-up appears.  
3. In the **My server** field, enter the name of the server.
4. In the **Host** field, enter the address of the host.
5. From the **Security** dropdown list, select the security level.
    - If you use an Email Labs sub-account, select **TSL** and enter `587` as the port number.
    - If you use any other provider, select **SSL**.
6. Fill in the fields: **Port**, **User**, and **Password**, and **Security** with data obtained in one of the following ways:
    - If you use an Email Labs sub-account, contact Synerise Support.
    - If you use any other provider, find the data in the provider's administration panel. For details, refer to the provider's documentation.
7. Proceed to [configuring a sender account](/docs/campaign/e-mail/configuring-email-account#configure-a-sender-account) section.

## Tracking hardbounces and softbounces
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Check the SMTP provider's documentation, as the procedure and credentials required may differ for each provider.