Mailgun

Mailgun is more than just an API for sending mass email marketing messages.

They offer the following services:

Email API for sending day to day and transactional email messages

Email Validation to ensure that each email address on your email list actually exists.

Burst Sending to manage mission-critical email deployments. This sending engine can deliver up to 15 million email addresses per hour'

Email Delvierababiltiy offers expert email strategy and reputation consulting for exceptional deliverability

Deliverability services include:

• An assigned Technical Account Manager (TAM) who monitors your account
• A custom deliverability strategy
• IP and domain reputation tracking and monitoring
• Monthly reports on your email program’s health and performance

Email Marketing turns this simple API into a robust marketing platform that gives you the features of a marketing automation tool.

Features include:

• Email Templates
• Drag and drop builder
• Collaboration tools
• Personalization
• Segmentation
• Email Automation
• Integrations 80+

Comparison tools include:

• Sendinblue
• Mailchimp
• Sendgrid
• Sparkpost