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How do I setup Mailgun in Growably?

Mailgun is the preferred SMTP provider for Growably as it has the deepest integration.

There’s three (3) ways to integrate Mailgun into Growably, each with pros and cons and we run you through the options below ?

 Click here to find out why you need an external SMTP Provider for Growably

OPTION 1: The API Method

This is the slightly slower, but better method using your own Mailgun account? 

The reason it’s better is because it is a deeper integration which gives you more email sending stats in Growably (such as Bounce Rates etc).

The reason it’s slightly slower is that you need to securely send us your Mailgun API Key and wait for us to add it into your account in our Admin Portal.

This takes us about 1-2 business days.

Click here for the secure form to send us your API Key.


At the moment, the High-Level Mailgun integration only works for domains setup in the US region.

If you setup your domain in the EU region, it will not work.

If you aren't able to setup your domain in the US region due to your GDPR Policy, then you will need to use OPTION 2: The Direct SMTP Method below.? 

Once we securely receive your API key, we’ll add it within two (2) business days and let you know once it's added.

Make sure to setup all the DNS Records that Mailgun lists during the process of setting up your domain/sub-domain in your Mailgun account.

We also strongly recommend you configure your DMARC policy for this sub-domain to either quarantine or reject (preferred).

(and before you ask, yes – we’ve already asked High-Level to build a system to allow you to do this yourself without us being stuck in the middle handling API keys ? )

OPTION 2: The Direct SMTP Method

This second option is the quickest yet not full featured method.

It’s the quickest because you can set it up immediately and start using it.

The reason it’s not full featured is because it doesn’t have deep statistical integration into Growably so you won’t be able to see stats like Bounces Rates etc.

This method literally just allows you to send emails via SMTP.

To configure this option, go to your Growably Settings section and select the SMTP & Mailgun Services page, click the Add Service button and choose Other.

Then just fill in all the SMTP details on the page and you’re good to go.

OPTION 3: Use our Mailgun Account

This option is where you use our Mailgun account as your SMTP Provider.

It’s for those of you that don’t want to setup your own SMTP Service.

There’s a bunch of cons to this option, including low sending limits and the part where if any other Growably user (accidentally) gets marked as sending spam, your email deliverability will also be affected.

In saying all that, if you do want to use our Mailgun account, simply fill in this 60 second form to let us know the Sub-Domain you want to use (see below). Within 2 business days of receiving the form, we’ll add it into our Mailgun account and send you the DNS Records you will need to create for us to be able to verify it.

  What is a Sub-Domain

Growably allows you to thread email conversations with your prospects all together in one place. To do this, you will send your emails out as a sub-domain of your existing domain (E.g. nigel@m.growably.com) so that all conversations with prospects will get threaded into the Growably Conversations area.

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