Email Hosting Providers

MandrillMandrill

Mandrill Usage Statistics · Download List of All Websites using Mandrill

Mandrill is an email infrastructure service. Detailed analytics offer insight to measure email performance.

Transactional Email

SPFSPF

SPF Usage Statistics · Download List of All Websites using SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

Google Apps for BusinessGoogle Apps for Business

Google Apps for Business Usage Statistics · Download List of All Websites using Google Apps for Business

Web-based email, calendar, and documents for teams. Renamed to Google Apps for Work, but now known as G Suite from Google Cloud.

Business Email Hosting