You may want to rethink this one as Mandrill screwed their customers big time recently. So I hope there is a way to add other services like sendgrid, mailgun etc.
I second this, I recently switched my apps off of Mandrill because of their changes.
I assume the authors didn't want to deal with the different "incoming webhooks" from different services, but it shouldn't be too hard to implement in theory.
Does anyone know if they are trying to kill off Mandrill?
Shortly after they closed down the Mandrill login they closed down our account for a TOS violation without warning. Outbound emails immediately stopped sending and we had to switch to Sendgrid ASAP. Their support didn't cave one bit and it seemed like they were actively trying to lose us as customers.
We had our main account which we used to send both marketing mails via MailChimp and transactional mails via SendGrid.
There also was a old account that was used by a different department for partner newsletters, which was already inactive for a few months.
They disabled the account, which we only noticed because emails stopped sending, and their UI also didn't give any explanaition. We asked their support, they said the second account was a violation of the TOS. We explained the situation and they still insisted on keeping the account closed.
Now we are with Sendgrid and are spending much less on mails, but I'd rather have lived without spending the night restoring email functionality.
Don't bother with Mandrill. They clearly don't want to keep their transactional email customers and perhaps just want to focus on the marketing piece. After the way they handled mandrill, I wouldn't trust them anyway (and I was a paying client of mandrill). Go with Sendgrid, mailgun etc. for transactional emails.
I assume the authors didn't want to deal with the different "incoming webhooks" from different services, but it shouldn't be too hard to implement in theory.
For reference, here's a list of SMTP providers which support inbound email: https://www.metachris.com/2016/03/free-transactional-email-s...