Questions, answered

Plans, limits, getting started and how the Developer API works. Can't find it here? The docs go deeper, or write to us.

Plans and pricing

Free: 3,000 emails a month (100 a day) and 1 domain. Pro, $20 a month: 50,000 emails and 10 domains. Scale, $90 a month: 100,000 emails and 1,000 domains. Yearly billing costs less. See pricing
No. Turning on the Developer API and using the Free plan cost nothing.
Each recipient, across to, cc and bcc. Recipients we skip because they're suppressed don't count.
Sends return 429 until the quota resets on the 1st of the month (midnight UTC). We email you at 80% and 100%, and nothing extra is ever charged.
Yes: a full refund within 14 days of a charge or a renewal. Refund policy

An API key and a domain verified with three DNS records. Domains already verified in Marketing or Mail are ready to use. Quickstart
Any language that can make HTTPS requests with JSON, from your server. Browser calls are blocked so your key stays secret.
Up to 50 recipients per field and 40 MB of attachments per email, 100 emails per batch request, and scheduling up to 30 days ahead.
Yes: broadcasts to your contacts, with an unsubscribe link and one-click unsubscribe headers added for you.
Add a webhook endpoint. Events are signed so you can check they came from us, and failed deliveries are retried. Webhooks