SendGrid

The SendGrid integration adds the person behind an approved conversion to your SendGrid Marketing Campaigns contacts — and, if you choose one, to a list — so you can follow up with the people your links actually brought in. Clicks are not sent: a click has no email address. Available on Growth and Ultimate.

What you need

• A SendGrid API key with at least Marketing access (Settings → API Keys → Create API Key). It starts with SG..
• Optionally, the list ID to add contacts to (Marketing → Contacts → open the list — the ID is the last part of the URL).
• Conversions that include an email. Report it with the conversion; conversions without one are skipped.

Connect it to Letlink

1. Open Integrations → SendGrid. Owners and admins only.
2. Paste the API key and, optionally, the list ID, then save.
3. The next approved conversion with an email appears under Marketing → Contacts within a few minutes — SendGrid processes contact imports in the background.

What we send

One PUT https://api.sendgrid.com/v3/marketing/contacts per conversion, with list_ids set to your list and a single contact: the email and, when we know it, the visitor's country. If the email is already a contact it is updated and added to the list; nothing is removed.

Nothing is arriving — what should I check?

• Only conversions that carry a valid email address are delivered. Check that your conversion reports include one.
• A 403 means the API key lacks Marketing permissions. Create a key with Full Access or Restricted Access → Marketing.
• SendGrid accepts the request with 202 and imports it later. A rejected address (for example on your global suppression list) is not added, and SendGrid does not report it back to us.