Mailchimp Transactional Email (formerly Mandrill) is designed to allow users to deliver fast, personalized transactional emails using API or SMTP.
$0
per month
Sinch Mailgun
Score 6.5 out of 10
N/A
Mailgun is a transactional email API service which was owned and supported by Rackspace (acquired in 2012) and then spun off in 2017 as an independent and standalone entity. It is now supported by Sinch since that company's acquisition of Mailgun and Mailjet, through acquiring Pathwire.
Sendgrid offers a lot of the same features as Mandrill, but goes a lot further in helping you achieve maximum deliverability for your e-mails. They have a respectable free tier for sending as well as receiving emails, and their paid tiers are very reasonably priced.
What I like better about Mandrill than Mailgun is that Mandrill has integrated Template management. You can issue an email to be sent with a template and submit merge variables along with the email data. Doing this with Mailgun means you have to roll your own template …
They're both fairly comparable, though MailChimp made you jump through a few more hoops to use the service, though these were put in place to maintain server integrity in order to reduce bounce rates. I haven't seen a difference, so this was really more of a pain point than …
They have a great free tier for up to some amount of emails a month. Looks attractive when you are a new startup, but once you have customers and they go down, not so much.
Amongst the various transactional email vendors (Mandrill by MailChimp, SendGrid's transactional email product, Mailjet, etc.) they are all relatively similar. Mailgun stands out in that it has one of the more generous free tiers and therefore is a strong choice for small …
I've tried SES. It had spotty deliverability and AWS has fiddly docs and apis. I tried a few others and while some worked well, they had neither the exposure or maturity to make me confident in using them in a production app. Out of all the products that I have tried that offer …
We went with Mailgun because they had fantastic APIs and libraries (Ruby in our case) and because their pricing was among the best of all services that we evaluated.
Any system that requires transactional email message functionality as an external service. The benefits of a well managed and vetted server to maintain reputation as well as being reliability is well worth the effort needed to integrate towards the API specs
Mailgun's pay-as-you-go pricing structure is fantastic, especially if you don't need to send that much email. The pricing, including the free tier, is much more generous than what you can get with some pricier providers, like SendGrid. I mainly just use Mailgun as an SMTP server for web services, and the service has been set-up-and-forget, which is great because I never even have to log onto the Mailgun website and do any work. Mailing list support also looks great for rolling-your-own and not relying on more expensive mailing list services.
Mandrill is extremely reliable. We switched from using a platform that was very hit-or-miss, but we never had a single deliverability issue with Mandrill's transactional API. Every email was sent reliably and quickly.
Mandrill's reporting and debugging features made it easy to ensure that all our messages were getting delivered to the right place in a timely manner. In fact, Mandrill's tools were so robust that we used it as an end-around way of debugging another failing service we were using.
Mandrill is a very affordable add-on to an existing MailChimp account. Adding an extra layer of reliability was a no-brainer, and made the cost essentially negligible to our organization.
The rate-limit system can be troubling. If you are switching providers and already have a large e-mail volume, you're going to want to transition slowly. The per-hour send limits are initially very low, and if you have any deliverability or complaint hiccups, they will plummet quickly. The Mandrill support staff is very helpful in this area - they will not (and claim that they can not) manipulate send limits for any account at any time for any reason.
Billing is combined in with a paid MailChimp subscription, which didn't used to be the case.
No built-in templating features (This was a bit sad after coming from Mandrill which excelled at this)
Dashboard UI (although easy to use) is a bit dated in appearance
Logs are cumbersome compared to Mandrill
Setting up TLD (top level domain) names (things like .online or .church) that are not common require an email to tech support (this is annoying)
Sometimes can be slow in delivery
Shared IP addresses can be SPAM filtered or delayed (requires an email to support to have a new one assigned - Note: this can be mitigated by buying a dedicated one for a monthly fee)
It could be more up-to-date and could offer some extra features that other competitors do like templating and better querying and filtering. As it is right now most things are easy to use but seem rather barebones next to Mandrill. The API is easy to implement thanks to the great documentation which is why I recommend Mailgun so often.
There have been a few minor outages through the years, but nothing more than a few minutes. These small outages are to be expected in any kind of a SaaS product, but Mailgun handles them very well. We designed our software to just retry sending after a while if there is an outage. As far as I know, we have never had to do more than a few retry cycles. This is all automated on our end, so we rarely even notice. Our customers have never noticed any mail sending outages.
The API and the deliverability of emails is excellent. Their API is very responsive and performs perfectly fine. I have no complaints there. Their management interface though (accessed through the web) is pretty slow though. Searching through lists of emails when I'm tracking down a problem for a customer can take 10+ seconds which is annoyingly high for a modern web app.
I haven't personally reached out to their support team, but the feedback I've heard from our tech support and engineering teams have been that their response to questions has often been they either are unsure or that Mandrill is what it is. For example, when our customers weren't able to see opens and clicks for all emails sent, and we reached out to their support, the response was it is what it is, and they'll send a notification to our app if they can.
You can't seem to get ANY support until you shell out hundreds of dollars per month. I even did this when we could not deliver mail with Mailgun, and the response was slow and inadequate. Nor would they refund my money. I'll never be a customer of Mailgun again.
So we actually work with clients across all of the platforms listed above, but Mandrill has a huge ease of use bonus in its favor, especially when working with clients who are setting up a Cart Recovery style marketing campaign for the first time or are looking for a bit of a fire-and-forget setup. With more sophisticated clients (on the scale of global ecommerce companies), who have a larger subscriber/customer base and in-house design teams, we find that Mandrill usually isn't enough
To be honest, the tools are quite similar and again I dont recommend using them as a standalone products, but they power the work we do via CRMs and our marketing campaigns. Mailgun integrates slightly better which it is why it is the preferred choice for our agency, as it integrations options seem to be better
Over the past six years, Mailgun has scaled with our growth very easily. We haven't had to make any code changes to handle our larger volume today, and their pricing has scaled naturally with our growth. As far as I know, there is nothing we will need to do in order to grow 10-fold. Mailgun just handles the load really well.
By not investing in our mail server, we have saved huge amount of money and time. For configuration and installation of an email server on Linux-based server, we would have to hire a network administrator.
If email delivery is an issue in a hosting provider, another solution is to switch the hosting. Fortunately with Mailgun, we didn't need to try different hosts and experiment which one works best for emails. We can stick to our existing web hosting provider and would not need to change it just for the sake of improving email deliverability.
The pricing of Mailgun is very cheap and straightforward. First 10K emails are free every month and that's a big advantage for our organization because our volume of emails is rarely more than 10K per month.
