# Use your Postmark Account

You can use your Postmark account to send email through Customer.io with no loss in functionality. To take advantage of Postmark, you need to do two things:

1.  [Point Postmark’s webhooks at Customer.io](#webhooks).
2.  [Configure Postmark as a custom SMTP server in Customer.io](#custom-smtp).

## Point Postmark’s webhooks at Customer.io[](#webhooks)

1.  Log into Postmark.
    
2.  Select your server, the *Message Stream* you’ll be sending emails from, and then the *Webhooks* tab.
    
3.  Click **Add webhook** and enter the webhook URL that corresponds to your region in the Webhook URL field.
    
    *   US: `https://track.customer.io/postmark/events`
    *   EU: `https://track-eu.customer.io/postmark/events`
4.  Select the *Delivery*, *Bounce*, *Spam*, and *Subscription Change* checkboxes.
    
     Do not send *Link Click* or *Open* webhooks to Customer.io!
    
    Customer.io already tracks this information. If you send these webhooks, we’ll record each event twice (once natively in Customer.io and again via Postmark webhook).
    
    [![Postmark's webhook settings](https://docs.customer.io/images/postmark-webhook-settings.png)](#acd21b49dc092895b10055d1d295455f-lightbox)
    

If you want to track opens and clicks via Postmark and not Customer.io, you can change [tracking settings](/journeys/link-tracking/#emails) on an email by email basis.

## Configure Customer.io custom SMTP settings[](#custom-smtp)

### Obtaining SMTP credentials from Postmark[](#obtaining-smtp-credentials-from-postmark)

Before you begin, you’ll need to generate a Postmark SMTP Token. You’ll find it on the *Settings* tab of the Postmark Message Stream that you want to send from.

1.  Go to the *Settings* tab of your Postmark Message Stream (the same stream that you setup webhooks for in the previous step).
    
    [![Find your SMTP credentials](https://docs.customer.io/images/postmark-smtp-1.png)](#6aadf6c15e623a335ac3670089243b74-lightbox)
    
2.  Click on **Generate an SMTP Token**
3.  Note the *Access Key* as you’ll use it as your username and the *Secret Key* as your password in Customer.io
    
    [![Generate an SMTP Token](https://docs.customer.io/images/postmark-smtp-2.png)](#bd980e4a8625600fab47101ea583753e-lightbox)
    

Learn more about [Postmark SMTP settings](https://postmarkapp.com/support/article/1207-how-to-create-and-send-through-message-streams#sendingsmtp).

### Configuring Customer.io to use the credentials obtained[](#configuring-customerio-to-use-the-credentials-obtained)

1.  Go to [**Settings** > **Workspace Settings**](https://fly.customer.io/workspaces/last/settings/).
2.  Click **Email**, click **Custom SMTP Settings**, and then click **Add Custom SMTP Server**.
    
    [![Custom SMTP settings page](https://docs.customer.io/images/smtp_settings_no_servers.png)](#e716d23f8203dc611fab77ba40838a5f-lightbox)
    
3.  Select **Postmark** and click **Continue to set up**.
4.  If you haven’t set up webhooks yet, copy the URL on the **Set up webhooks** tab and then [set up webhooks](#webhooks) to report message metrics in Customer.io.
5.  Click **Add Credentials** and enter the *Access Key* and *Secret Key* created in the previous step as your Postmark credentials.
    
    [![Adding one custom SMTP server.png](https://docs.customer.io/images/smtp_settings_postmark_creds.png)](#99ce770aa4de93cc18fbf99ed53a6438-lightbox)
    
6.  Click **Finish set up**. Your account is now set up to send email through Postmark. If you have any questions or feedback, [contact us](https://customer.io/contact/) and we’ll be happy to help!

 Configure multiple servers to use both transactional and broadcast streams

You can configure [multiple custom SMTP servers](/journeys/multiple-smtp-servers/) and assign one to each of your Postmark server types accordingly.

  

 Postmark’s Broadcast Stream will include their Unsubscribe link by default

If you do configure your Customer.io workspace to send bulk emails through Postmark’s Broadcast Stream, [an Unsubscribe link is required](https://postmarkapp.com/support/article/1208-how-to-add-an-unsubscribe-link). Postmark inserts their own link into your messages by default, however you can opt-out of this by [contacting Postmark Support](https://postmarkapp.com/contact?topic=streams). You can request removal of their link by informing them that you’re using Customer.io’s built-in Unsubscribe link and management, and they’ll be happy to assist from there.