#1 SendGrid
SendGrid is typically used by product and engineering teams that need to reliably send application emails at scale, often alongside marketing teams running scheduled campaigns. It commonly sits behind customer-facing products where email is part of core workflows.
Teams usually connect SendGrid via API or SMTP to trigger transactional messages from their app, then iterate on templates without changing application code. Day to day, they monitor delivery events, manage suppressions, and adjust sending domains and authentication as volume and use cases expand.
Good Fit For
- SaaS teams sending password resets, sign-in links, receipts, and onboarding sequences triggered directly from the product
- Ecommerce teams running order, shipping, and returns notifications where timely delivery and bounce handling are operational requirements
- Teams that need a clear handoff between developers implementing sending logic and non-developers maintaining email templates and content updates
Considerations
- Setup and ongoing operations tend to involve deliverability hygiene work (authentication, suppressions, event monitoring) that requires consistent ownership
- When email programs become highly segmented and calendar-driven, teams may need additional process outside the tool to coordinate approvals, content timelines, and audience logic