Authenticating your email is a widely accepted industry best practice and recommended for all email senders. Using authentication helps to build trust with mailbox providers, hosting companies, and spam filters. Not using authentication can lead to deliverability problems for B2B senders.
- The SPF and DKIM authentication protocols allow you to specify which IP addresses and domains are authorized to send email for your business. This helps to identify you as the sender and build your sending reputation.
- DMARC authentication leverages both SPF and DKIM to help prevent domain spoofing and can be used to block unauthorized senders using your domain to send spam and phishing email. Spammers using your domain to send spam and phishing email can damage your sending reputation and brand image.
Use Everest Inbox Tests (In-Flight>Inbox Placement>Inbox Tests) to check your authentication results for specific campaigns. You can also use Everest's Infrastructure feature (Monitoring>Infrastructure) to monitor DMARC compliance and identify potential domain spoofing.
Below is a list of some popular B2B mailbox providers, hosting companies, and spam filters that use email authentication in their spam filter decisions.
- Google Workspace
- Microsoft Office 365
- Rackspace
- Zoho
- Barracuda
- Cisco Email Security
- Mimecast
- Proofpoint
