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 916,086 websites Mailgun Customers. We know of 511,432 live websites using Mailgun and an additional 404,654 sites that used Mailgun historically and 263,745 websites in the United States.
Get a list of 916,086 websites using Mailgun which includes location information, hosting data, contact details, 511,432 currently live websites and an additional 930,636 domains that redirect to sites in this list. 404,654 sites that used this technology previouslyand 263,745 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.