How to Integrate Poptin with SendGrid

Connect Poptin to a SendGrid contact list using an API key and list ID. Check both the vendor’s API test lead and a controlled submission from your published popup before relying on the workflow.

Source: Poptin’s SendGrid setup guide, checked September 6, 2026. The acceptance checks below are editorial recommendations, not a client test report.

Prepare the connection

Confirm the intended SendGrid account and list. The vendor’s instructions specify a Full Access key; they do not establish a minimum narrower permission set. If that access does not fit your requirements, ask Poptin to confirm supported permissions before proceeding. Do not assume an untested alternative will work.

Connect and save

1. In SendGrid, open Settings → API Keys and obtain the key for this connection.
2. Open Marketing → Contacts, select the destination list and take the list ID from the URL after /lists/.
3. In Poptin, open Edit Design → Email and Integrations → Add Integration → SendGrid.
4. Enter the key and list ID, choose Approve, then Next or Publish Changes to save.

Keep the key in the connection settings and out of shared screenshots. Record the list name alongside its ID to make later destination checks easier.

Verify the destination

Poptin says a successful connection adds an API test lead to the selected SendGrid list. This checks the connection; it is not a substitute for testing your actual form fields.

Record the campaign, test address and submission time. If the vendor test lead appears but your form submission does not, check the published campaign and its saved integration. If the contact arrives with a missing value, inspect the submitted field rather than replacing the connection first.

Handle requirements beyond the documented fields

The source lists name, email and phone. It does not confirm every custom field or existing-contact update behavior. Test the exact fields and repeat-submission cases you need, and ask support about anything unresolved before committing to the integration.

If a contact exists but an email does not follow, inspect the SendGrid workflow separately. Contact delivery alone does not prove that a message was sent. Before retrying a submission, check whether it already reached the destination to avoid confusing the test record.

Return to Poptin integrations for other destinations. Keep the test outcome and unresolved requirements in your handoff notes; do not include credentials.