Finding your API Key

Postmark Server

Your API Key is located in the Server API section.

Postmark API Key

Sendwithus only accepts the Server API token to connect with your Postmark account. Sendwithus does not support the Account API token. For more information on the types of Postmark tokens, visit Postmark’s API Token guide.

Sender Signatures and Verification

Your sender signature must be verified before you can send emails.

  1. In your Postmark Dashboard, go to the Sender Signatures tab.
  2. Click Add a new Signature.
  3. Enter the name and email address of your new sender and click Create Signature.
  4. Check your email for a verification link to activate your signature.

Connect with Sendwithus

  1. Go to your Delivery Settings in the Sendwithus dashboard, and click on the Add ESP Account button.
  2. Name the account and select Postmark as the Account Type.
  3. Copy and paste your API Key from your Credentials tab on the Postmark Server into the API Key field.
  4. Click the Save ESP Account and wait for verification.

Enable Open and Click Tracking

Enabling these features will allow you to monitor your opens and clicks. To verify these options are enabled, follow the steps below.

  1. Select your server in Postmark and click the Settings tab.
  2. Navigate to the Outbound tab.
  3. Under the Tracking section make sure Open tracking and Link tracking are enabled.

Postmark Tracking Settings