Postmark vs Mailjet: Features, Pricing and User Reviews 2026

Postmark

Fast and Reliable Email Delivery Service for Developers

Transactional Email API Email Infrastructure

Mailjet

Email Marketing Platform for Teams

Transactional Email API Email Campaign Management

Postmark

Fast and Reliable Email Delivery Service for Developers

Transactional Email API Email Infrastructure

Mailjet

Email Marketing Platform for Teams

Transactional Email API Email Campaign Management

Postmark

Postmark is an email delivery service that sends your automated emails using modern technology. You can connect it to your website or app through their API or SMTP settings, and it handles the rest. Unlike regular email services, Postmark specializes in transactional emails - the important messages your customers expect right away.

The platform includes tools for tracking email delivery, viewing open rates, and managing bounce notifications. It also offers ready-made email templates that look good on all devices. Postmark separates your automated emails from marketing emails to keep delivery rates high.

The service runs on reliable servers around the world and includes helpful support from email experts. You start with a free account that includes 100 emails monthly, and you can upgrade when you need more.

Mailjet

Mailjet is a complete email platform that handles both marketing campaigns and automated transactional emails. You can design emails using templates or build your own from scratch without coding. The platform includes tools for managing contacts, creating email lists, and tracking how your emails perform.

It works through a web interface and also offers SMTP relay and API access for developers. This means you can send emails directly from your website or app. The service includes features like email validation to keep your contact list clean, A/B testing to improve results, and detailed statistics to understand how people interact with your emails.

Mailjet supports multiple languages and offers customer support in English, French, German, and Spanish.

Features of Postmark and Mailjet

Postmark

Fast email delivery to inbox in seconds
API and SMTP integration options
Pre-built responsive email templates
Detailed tracking and analytics
Message streams for email separation
Bounce and spam monitoring
Expert customer support team
DMARC security tools included
Webhook notifications for events
Multiple programming language libraries
Domain authentication assistance
Real-time delivery statistics

Mailjet

Drag-and-drop email builder with templates
Real-time team collaboration on campaigns
Contact list management and segmentation
Marketing automation and drip campaigns
A/B testing for subject lines and content
Detailed analytics and reporting dashboard
SMTP relay and REST API for developers
Email address validation tools
Multi-user access with role permissions
AI-assisted content creation
Landing page builder
Inbox preview across devices

Use Cases of Postmark and Mailjet

Postmark

Transactional Email Sending Password Reset Email Sending Welcome Email Sending Email Performance Tracking Email Bounce Handling

Mailjet

Transactional Email Sending Marketing Email Sending Email Performance Tracking

Pricing of Postmark and Mailjet

Postmark

Postmark offers clear pricing plans to fit different needs. Every account starts with a Free Developer Plan that includes 100 emails every month and never expires - perfect for testing or small projects.

The Basic Plan costs $15 per month and includes 10,000 emails. You can add more at $1.80 per 1,000 extra emails. This plan supports up to 4 users and 5 servers.

The Pro Plan at $16.50 monthly includes 10,000 emails with additional emails at $1.30 per 1,000. It offers up to 6 users, 10 servers, and includes inbound email features.

The Platform Plan costs $18 monthly for 10,000 emails, with extras at $1.20 per 1,000. It includes unlimited users, servers, and all advanced features.

High-volume senders can contact their team for custom pricing with dedicated IP addresses and priority support.

Mailjet

Mailjet offers a range of pricing plans to fit different business needs. The Free plan includes 6,000 emails per month with a daily limit of 200 emails, perfect for getting started with up to 1,000 contacts.

The Essential plan starts at $17 per month for 15,000 emails monthly. This plan removes daily sending limits and adds unlimited contacts, online support, and 500 email validations per month. You also get AI-assisted content creation.

The Premium plan costs $27 per month for 15,000 emails and includes all Essential features plus advanced statistics, marketing automation, A/B testing, landing pages, and priority support. You get 2,000 email previews monthly and can manage up to 20 subaccounts.

For larger organizations, the Custom plan offers tailored solutions with dedicated account management, deliverability consulting, custom user permissions, and specialized training. Pricing is provided upon request based on your specific needs.