MailerSend

MailerSend was built by the same team behind MailerLite, focused on transactional. Drag-and-drop templates plus a code-first API cover both designer and engineer flows. Pricing is competitive at small to mid volume.

The question here is which one a backend engineer would rather operate. That means SDK depth in the language already in use, whether a retry can safely be replayed, how much the event log tells you when a customer says the email never arrived, and whether the pricing curve stays sane as volume grows.

Against password resets, receipts, and magic links shipped from application code, MailerSend covers developer experience, SDK breadth, event stream, and webhook coverage, and does not cover idempotency keys and operating track record. Whether that gap matters depends on how central those are to the build.

• DX score: 8/10
• SDKs: node, python, go, ruby, php
• Idempotency keys: No
• Operating since: 2020
• Event stream: Yes
• Best published rate per 1,000: Tiers not published in comparable form
• Webhooks: Yes
• Deliverability: Good and steadily improving; reputation managed via dedicated IP options on paid plans.
• Free tier: 500/mo permanent

Good and steadily improving; reputation managed via dedicated IP options on paid plans.

Teams that want both API and visual template editing.