#1 MailerSend
MailerSend is used by product and engineering teams that need to send and manage transactional and service emails from applications. It often sits alongside support or ops workflows where message delivery, logs, and event data are reviewed regularly.
Teams typically authenticate domains, set up templates, and connect sending through an API or SMTP relay. Day to day, developers trigger emails from application events, while teammates adjust templates and variables. Delivery activity is monitored via logs, analytics, and webhooks feeding internal dashboards.
Good Fit For
- SaaS teams sending password resets, OTPs, receipts, and account notifications triggered by in-app events
- Teams that want designers or non-developers to edit transactional templates while developers keep sending logic in code
- Support or community workflows where users reply to automated messages and inbound routing is used to parse responses into an app
Considerations
- Owning the workflow in code (API/SMPP) can require engineering time for implementation, testing, and ongoing maintenance
- Using logs, analytics, and webhooks effectively often involves building internal reporting and alerting around email events