For sending emails. I use this primarily for password resets in this application.

We started off with AWS SES, but found it to be lacking in diagnostics and reporting. Mandrill is a quantum leap forward in this regard. Has some other really neat features carried over from MailChimp (templating).

Mandrill helps me to send emails to clients fastly, also is trackable, that's cool.

All my transactional emails.

Email notifications and in app emails

MailChimp integration. When we move off of MailChimp entirely, it’ll be nice and smooth. We can keep our metrics, lists, templates. None of that is particularly difficult to grab, but makes the choice here clearer. Also, I think you get some cool discounts if you use Mandrill.

The application sends emails via Mandrill

Transactional e-mail service.

We send monkeys to space and back with Mandrill. And transnational emails.

Automated emailers for VoicePing users

So I dont have email setup on the server and can track the app sending

All transactional emails

We use Mandrill to send transactional emails and newsletters. We've just moved from SendGrid as Mandrill has far better support for templates and also integrates really nicely with MailChimp where we can design the emails.

Transactional emails.

Email delivery (mostly for myself)

Mandrill is used to send reports to our customers.

We have add-on for Agile Toolkit that implements "Outbox" for your application through Mandrill API.

We use Mandrill to handle all transactional emailing - from welcome letters to password reminders to notifications.

We use Mandrill to send transactional emails.

Mandrill is used to send out all e-mail from the application and any tools and services in our infrastructure.

We use Postmark for application-specific transactional emails like notifications and digests for our users.

For automatic emails in the system.

Postmark is used for user-triggered event emails.