PostcardMania - PostcardMania specializes in results-driven multichannel marketing, offering simple and streamlined solutions that include everything from custom campaigns to plug-and-play automations that trigger highly personalized mail pieces.

TrueMail.io - TrueMail.io is an email checker service.

Every Door Direct Mail - Every Door Direct Mail is a Marketing Resource Management Service from Vya that enables you to provide customized and meaningful direct mail campaigns each time.

TheChecker.co - Accurate email verification at low prices.

Mail Shark - Mail Shark is one of the leading platforms that offer Marketing Programs, Printing, and Direct Mail Advertising services to customers all across the globe.

Verimail - Clean up email-address lists of any size or use our powerful API for real-time verification.