Email

Email APIs for password resets, receipts, and product mail. The API key belongs on a server. The address you show users should be a domain you control.

2 tools

Loops
Email
Email platform for SaaS teams that sends marketing, product, and transactional lifecycle mail from one place.
Pricing as seen: Free to start, no card required. Paid plan prices: See site.
Resend
Email
API for transactional and marketing email, with official SDKs and React Email templates.
Pricing as seen: Transactional Free is $0 for 3,000 emails/month, capped at 100/day. Pro starts at $20/month for 50,000 emails. Marketing Free covers 1,000 contacts.