Mailgun is a set of APIs that allow you to send, receive, track and store email effortlessly.
https://www.mailgun.com/
Email Hosting Providers · Transactional Email
Get access to data on 1,295,990 websites Mailgun Customers. We know of 887,164 live websites using Mailgun and an additional 408,826 sites that used Mailgun historically and 548,905 websites in the United States.
Get a list of 1,295,990 websites using Mailgun which includes location information, hosting data, contact details, 887,164 currently live websites and an additional 982,660 domains that redirect to sites in this list. 408,826 sites that used this technology previouslyand 548,905 websites in the United States currently using Mailgun.
Countries
Financial
Group
Region
These are sites that we think might use Mailgun in the future because of their similarity to other sites that already do.