Test AgentMail multi-tenant webhooks before they leak across tenants
AgentMail webhook creation can look done after a 200 OK. The real test is whether the persisted webhook is still scoped to the inboxes you sent.

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Articles tagged with #api
AgentMail webhook creation can look done after a 200 OK. The real test is whether the persisted webhook is still scoped to the inboxes you sent.

Raw walkthrough of adding Slack notifications for failed payments in a repo that already had Stripe, Clerk, and Resend — introspect, route, prove upstream events, and name honest limits.

Sending an email gives you an ID. The harder part is proving your app can reconcile delivered, bounced, and opened events back to the right record.

Sending an email is easy. The integration pain starts when you need delivery status, webhooks, and app state you can trust
A narrow Cal.com API testing note: create, fetch, reschedule, cancel, and verify the calendar identity before users see duplicate events.
A narrow Polar billing integration note on why external_id matters before checkout, and how to test the customer mapping without a live API token.
