Postmark vs Coresender: What are the differences?

Postmark: Email delivery for web apps - done right. Postmark removes the headaches of delivering and parsing transactional email for webapps with minimal setup time and zero maintenance; Coresender: Transactional & Marketing Email Delivery Service. It is an email delivery service for your transactional and marketing emails. It replaces your email infrastructure so you don’t have to build, scale, and maintain these systems in-house. With an easy SMTP service you can start quickly, while our robust API gives you full control over email processing and reporting. Your transactional emails are delivered instantly and your marketing campaigns can be scaled to millions.

Postmark and Coresender can be categorized as "Transactional Email" tools.

Some of the features offered by Postmark are:

• Create a new virtual server- Instant access to our infrastructure, no waiting required. Create as many servers as you want, for each of your web applications and environments.
• Drop code into your app- Swap in our SMTP endpoint, or get started with our APIs using one of our send API libraries for Ruby, Rails, .NET, Python, PHP, and more.
• Send emails and track delivery- A beautiful interface to monitor volume, bounces, spam complaints, and send activity. View full email content to troubleshoot issues.

On the other hand, Coresender provides the following key features:

• Get your emails delivered instantly
• High priority for your transactional emails
• Explore useful statistics