SPF
Download List of All Websites using SPF
The Sender Policy Framework (SPF) is an email-authentication technique which is used to prevent spammers from sending messages on behalf of your domain. With SPF an organisation can publish authorized mail servers.
Microsoft Office 365
Download List of All Websites using Microsoft Office 365
Microsoft Office 365 is a Software as a Service (SaaS) solution that includes Microsoft Office and other services, such as email and collaboration, from Microsoft’s cloud server. Microsoft Office 365 provides desktop functionalities and is available by subscription.
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SendGrid
Download List of All Websites using SendGrid
SendGrid is a Denver, Colorado-based customer communication platform for transactional and marketing email.
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Zendesk
Download List of All Websites using Zendesk
Zendesk Inc. is a customer service software company headquartered in San Francisco, California, USA. It is listed on the New York Stock Exchange with the symbol ZEN and is a constituent of the Russell 2000 Index