MailerSend
Modern transactional API with a clean UI.
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.
Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.
Against behavior-triggered journeys, broadcasts, and winback campaigns measured on revenue, MailerSend covers scheduling, event stream, the suppressions API, and multi-tenant support, and does not cover operating track record. Whether that gap matters depends on how central those are to the build.
- Scheduling: Yes
- Event stream: Yes
- Deliverability: Good and steadily improving; reputation managed via dedicated IP options on paid plans.
- Operating since: 2020
- Suppressions API: Yes
- Best published rate per 1,000: Tiers not published in comparable form
- Multi-tenant: Yes
- Free tier: 500/mo permanent
- Starts at: $7/mo for 5,000 emails
Good and steadily improving; reputation managed via dedicated IP options on paid plans.
Teams that want both API and visual template editing.
- › Drag-and-drop templates plus API
- › Inbound routing supported
- › Sub-accounts for agencies
- › Smaller SDK footprint than SendGrid
- › Brand and ecosystem less recognized than older providers
Features at a glance
| API | Yes |
| SMTP | Yes |
| SDKs | node, python, go, ruby, php |
| Webhooks | Yes |
| Templates | rich |
| React Email | No |
| Batch send | Yes |
| Scheduled send | Yes |
| Suppressions | Yes |
| Multi-tenant | Yes |
| Inbound parsing | Yes |
| Event stream | Yes |
| Idempotency keys | No |
| Dedicated IP | Yes |
Appears in rankings
13 Best Transactional Email APIs (2026), Tested
Clean modern API and visual builder. Smaller ecosystem than the giants.
7 Best Email Tools for Developer Experience (2026), Tested
Modern API, clean dashboard, drag-and-drop plus code.
11 Best Email Tools With Permanent Free Tiers (2026), Tested
3,000/mo permanent.
10 Best Email Tools for Multi-Tenant SaaS (2026), Tested
Modern API and sub-account story for teams that want developer and client-facing surfaces together.
12 Best Mailchimp Alternatives (2026), Tested
Better Mandrill-style fit for teams that want transactional API plus visual templates.
7 Best GDPR-Compliant Email Tools (2026), Tested
Straightforward privacy documentation and practical transactional controls for smaller teams.
7 Best Email Tools With HubSpot Integration (2026), Tested
A clean transactional endpoint when HubSpot workflows or application code own the trigger logic.