We chose Postmark as our transactional email service for several reasons:
Laser-focus (at the time) on transactional email - their success/speed/reliability with delivering transactional email is amazing. Note, they have now branched out and offer marketing/broadcast email services too.
Developer-friendly - Awesome docs and resources. Their Rail gem integrates directly with ActionMailer so nearly all of our code worked without changes.
Servers - You can set up "Servers" for different mail streams/workflows to keep things separate and easy to review.
Bootstrapped - Wildbit (who makes Postmark) is bootstrapped just like the Friendliest.app and they offer a service credit to other bootstrapped startups.
Of course we chose Coresender to send our own transactional emails :) So I thought I'll let you know how we use it.
We set up separate sending accounts for all company needs, eg. transactional emails, monitoring alerts, time to inbox. We even configured our office printers to send emails through Coresender.
We have a real-time and extremely usable view into what emails go through each account, so each time anybody reports an email not arriving we're able to assist them in a few seconds
We utilize our message timeline feature, so we can learn eg. if people are clicking on password reset links
We always know how many of our onboarding emails are being opened which helps us improve them
Finally, we have full controll over our suppressions lists, so we can add (and remove!) from them whenever necessary.
To sum up, at Coresender we're eating our own dogfood and it helps us stay connected to the product and understand our customers better.
Twilio SendGrid's cloud-based email infrastructure relieves businesses of the cost and complexity of maintaining custom email systems. Twilio SendGrid provides reliable delivery, scalability & real-time analytics along with flexible API's.
Mandrill is a new way for apps to send transactional email. It runs on the delivery infrastructure that powers MailChimp.
Send email from your app with a simple API call, Sendwithus manages the rest. Templates, testing, data management, segments, and analytics are all accessible through a friendly dashboard.
Open Tracking;Click Tracking;Unsubscribe Tracking;SMTP Relay;SMTP API;Web API;DKIM;SPF;Reputation Monitoring;ISP Monitoring;Domain Level Load Balancing;ISP Deliverability Outreach;Return Path Certified Partner;Support via Phone, Chat, Email, Online Support Portal
Inbound Email- Set up inboxes for Mandrill to control. When they receive email, we’ll make an API call to your app with all the relevant information, so you don’t have to worry about what’s happening behind the scenes.;Webhooks Support- Create custom event notifications, keep track of new signups and unsubscribes in real-time, get a notice of every spam complaint so you can flag them in your database.;Rules Engine- Modify the content of email coming through Mandrill without having to involve developers. For example, you could tell Mandrill to take any email coming from confirmation@yourdomain.com, give it a new template, and add Google Analytics tracking.;Advanced Tagging and Reports- Generate custom reports based on the stats that matter to you. Add campaign tags like “confirmation email” and “mailing list,” and combine them with data Mandrill automatically tracks. Tagging allows you to graph sets of data like “bounce rate for confirmation emails to Gmail addresses.”;Meaningful Metrics- Observe trends and monitor delivery to see if you’re on track or if you need to make adjustments. Search by recipient or domain, sort sent email by bounces or rejections, and track opens and clicks.;Status Updates- Troubleshoot from wherever you are, and send status messages to recipients from Mandrill;Mobile Access- Your transactional email is generated at all hours. Mandrill is the only service with a mobile app, so you can monitor your performance even when you’re away from your desk.
