📧Connecting SMTP

Learn how to connect your custom SMTP email service to Highlightcards and send branded transactional emails through your own domain.

To connect SMTP, you first need to retrieve the SMTP credentials from your email service provider. In this guide, we’ll show you how to do it using SendGrid.

1. Log In to SendGrid

2. Go to SMTP settings page

Create an API Key

1. Enter a name for the key (for example: Highlightcards SMTP).

2. Click Create Key.

3. Copy the generated API key — you’ll need it during the Highlightcards setup.

Add SMTP to Highlightcards

Highlightcards > Left-Hand Menu > Account Settings > Services

1. In the Custom SMTP section, click Connect Account.

2. A form will appear asking for:

   • SMTP Server

   • Port

   • Username

   • Password

   • Sender's email

   • Sender's name

3. Copy and paste the SMTP details from SendGrid into the corresponding fields.

4. Click Connect.

If everything is correct, the SMTP connection will be added successfully.

Send a Test Email

After connecting, you will see a Send Test Message button.

1. Enter your email address.

2. Click Send Test Message.

3. Check your inbox to confirm delivery.

If the test email arrives, your SMTP setup is active.

Verify Integration in SendGrid

To ensure SendGrid recognizes Highlightcards’ activity:

1. Go back to your SendGrid dashboard.

2. Open Activity or Integration Verification.

3. Click Verify Integration.

This confirms that Highlightcards can successfully send emails using your SMTP credentials.