Wow, very nice! Please reach out ot me: ev@mailgunhq.com I want to make sure you're not paying too much for Mailgun. We love smart and ambitious customers.
Thank you.
I have had a few questions/issues during development and the live-support was simply brilliant. Meanwhile I switched 2 of my Rails apps from Sendgrid to MailGun.
$request->setPostFields(array('from' =>'Excited User <Excited User <me@samples.mailgun.org>',