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Email API

MailerSend

$$ Midfrom $7/mo · Last reviewed May 2026

MailerSend is a transactional email service providing an Email API, SMTP relay, templates, and inbound email routing, built by the team behind MailerLite. Founded around 2020, it targets developers and SaaS teams sending application-generated email. It focuses on transactional sending with a deliverability emphasis rather than marketing campaigns, and supports inbound routing. A free plan is available, with affordable paid tiers placing it in the budget range. The service is API-first and compliant with ISO 27001 and GDPR.

transactionalapi-firstinboundfree-tier

Overview

Founded
2020
Pricing tier
Mid
Startup-friendly
Yes
Enterprise-ready
Yes

Email API

Free tier
Yes: Free plan: ~3,000 emails/mo (verify current allowance).
Transactional
Yes
Marketing
No
Inbound parsing
Yes
Deliverability focus
Yes
API-first
Yes

Categories & compliance

Categories

Compliance

ISO27001GDPR
Attributes are sourced facts; rankings are derived from them by a transparent scoring engine. “Verified” is a vendor-claimed badge and has no effect on ranking.