We have integrated Mailgun's SMTP API on SmartReach.io for your ease. We assume that you have used mailgun and know how to add a domain and set up authentications like SPF, DKIM, Dmarc in mailgun.
If you are not sure of the above you can find them here in the guide.
Here are the detailed steps on how to integrate your Mailgun email account on SmartReach.io
Step 1: Follow the steps to integrate your email account.
Step 2: Select Mailgun as the email service provider.
Step 3: Fill in the basic account details in the form.
Step 4: Fill the Mailgun email domain and API key
These can be found in your Mailgun account under Domains in your Mailgun account like here
Step 5: Select the region -- If you are from European Union select region as EU or from rest of the world select US ( North America ), and click on Test Settings and Save.