Sendaro is a transactional email API for sending password resets, receipts, sign-in links and notifications from your own domain. Verify a domain with DKIM, SPF and DMARC records, create an API key, and send with one REST request or an SDK call. Free tier of 3,000 emails per month, with Pro from $17 per month.
Sendaro is a developer-focused transactional email platform designed to make sending application emails simple. It gives indie developers and small teams a straightforward API for account verification, password resets, login codes, receipts and notifications.