Postmark Alternatives

A

AWS SES

moderate switch cost

Amazon Simple Email Service for high-volume transactional and marketing email

Has free tier

B

Brevo

significant switch cost

All-in-one marketing platform with email, SMS, CRM, and marketing automation

Has free tier

C

Customer.io

significant switch cost

Automated messaging platform for targeted emails, push notifications, SMS, and in-app messages based on user behavior

L

Loops

moderate switch cost

Email platform for modern SaaS companies with built-in transactional and marketing email

Has free tier

M

Mailchimp

moderate switch cost

All-in-one email marketing and automation platform with audience management, landing pages, and analytics

Has free tier

M

Mailgun

moderate switch cost

Transactional email API service for developers with powerful sending infrastructure

Has free tier

M

Mailtrap

drop-in switch cost

Email testing and sending platform with sandbox environments and SMTP/API delivery

Has free tier

P

Plunk

drop-in switch cost

Open-source email platform for transactional and marketing emails with a simple API

Has free tier

R

Resend

drop-in switch cost

Developer-first email API for transactional and marketing emails

Has free tier

S

SendGrid

drop-in switch cost

Cloud-based email delivery platform for transactional and marketing emails with analytics and template management

Has free tier

S

SMTP2GO

drop-in switch cost

SMTP relay service with email delivery, reporting, and dedicated IP options

Has free tier

S

SparkPost (Bird)

moderate switch cost

High-volume email delivery platform with predictive analytics and IP reputation management

Has free tier

U

Unosend

drop-in switch cost

Transactional and marketing email platform with simple volume-based pricing

Has free tier