Postmark Alternatives & Competitors

Security-first transactional email: SMTP relay and REST API for password resets, receipts, 2FA and notifications. 100% owned infrastructure, strict sender vetting, human deliverability, ISO 27001/27701/HIPAA, native SendGrid/Mailgun compatibility.

Key Omnivery features:

API API Infrastructure Compliance

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A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.

Key Mailgun features:

Scalability API Flexibility Deliverability Analytics and Tracking

Open Source

Email for developers.

Key Resend features:

Ease of Use API Flexibility Deliverability Scalability

Brings voice and messaging to your web and mobile applications.

Key Twilio features:

Scalability Ease of Integration Global Reach Feature-Rich Platform

Open Source

Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.

Key Brevo features:

User-Friendly Interface Comprehensive Analytics Customization Options Automation Features

All-in-one email service provider that provides maximum insight and deliverability results for both marketing and transactional emails.

Key Mailjet features:

User-Friendly Interface Real-Time Analytics API Integration Template Management

Scale your business email & marketing messages with Amazon Simple Email Service (SES), a cost-effective and reliable cloud email service. Sign up today.

Key Amazon SES features:

Cost-Effective Scalable High Deliverability Integration with AWS Services

Open Source

MailChimp is the best way to design, send, and share email newsletters.

Key MailChimp features:

Ease of Use Automation Features Comprehensive Reporting Integrations

Mandrill is a new way for apps to send transactional email. It runs on the delivery infrastructure that powers MailChimp.

Key Mandrill features:

Scalability Deliverability Integration Analytics

We bought a billboard in Times Square and we're letting you advertise your startup on it!It's free.

Elastic Email is an all-in-one email delivery platform for both marketing and transactional email.

Key Elastic Email features:

Cost-Effective Scalability User-Friendly Interface API Integration

Use our powerful Email APIs to deliver all your business critical emails on time and to the Inbox. We are the world’s only ESP that gives cashback on emails opened.

Key Pepipost features:

Cost-Effective Ease of Use SMTP Relay Real-Time Analytics

Deliver your app and website emails on time and to the inbox. Trusted to send 25% of the world's non-spam email. Email delivery for companies big and small.

Key Sparkpost features:

High Deliverability Comprehensive Analytics Scalability Advanced API

Open Source

SMTP2GO is the scalable, reliable email deliverability solution. Worldwide servers, a robust API, and powerful reporting set us apart. Try our free plan!

Key SMTP2GO features:

Reliability Global Infrastructure Detailed Reporting Easy Integration