Zendesk

Zendesk Usage Statistics · Download List of All Websites using Zendesk

Organize, prioritize and engage with others on support requests.

Salesforce SPF

Salesforce SPF Usage Statistics · Download List of All Websites using Salesforce SPF

This site uses Salesforce.com to send emails.

SPF

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 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

DMARC

DMARC Usage Statistics · Download List of All Websites using DMARC

A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse

DMARC

Amazon Route 53

Amazon Route 53 Usage Statistics · Download List of All Websites using Amazon Route 53

Amazon's scalable DNS web service system.

Enterprise DNS

Microsoft

Microsoft Usage Statistics · Download List of All Websites using Microsoft

This site is hosted on Microsoft infrastructure

Canadian hosting

Microsoft Azure

Microsoft Azure Usage Statistics · Download List of All Websites using Microsoft Azure

Hosted on Microsoft Azure.

Canadian hosting · Cloud Hosting · Cloud PaaS

Google Webmaster

Google Webmaster Usage Statistics · Download List of All Websites using Google Webmaster

Webmaster tools provide you with a free and easy way to make your site more Google-friendly.