Doppler Relay Alternatives & Competitors

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

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

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder. .

Key MailReach.co features:

Deliverability Improving Email Warming Meaningful Warming Content Smart Warming Algorithm

Visit website paid $19.5 / Monthly (Pro)

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

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

You can use SendGrid via SMTP or our simple to use Web API. Understand how best to utilize SendGrid.

Key SendGrid Email API features:

Scalability Deliverability Comprehensive API Analytics

Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

Key Postmark features:

High Delivery Rates Fast Sending Speed User-Friendly Interface Detailed Analytics

Open Source

We make it easy to send emails triggered by user behavior. Build, measure and improve your emails to activate and retain users.

Key Customer.io features:

Powerful Segmentation Behavioral Targeting Flexible API Customizable Workflows

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

SALESmanago is the only no-code, AI driven CDXP (all in One Customer Data Platform & Customer Experience Platform), harnessing the full power of first- and zero-party data.

Key SALESmanago features:

Customer Data Platform CRM & Dynamic Segmentation Email Marketing Automation Lead Generation

paid Free Trial €499.0 / Monthly

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

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

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

JangoSMTP is a transactional email delivery service that adds tracking and authentication to email.

Key JangoSMTP features:

SMTP Integration Real-Time Analytics Easy to Use Customization