7 Ways to Improve E-Mail Deliverability

2. Adopt e-mail authentication. Authenticating your e-mail enables receiving domains, reputation service providers and other related entities to establish your identity and associate a reputation with it, the whitepaper says. Unauthenticated e-mails often are assigned negative points by spam filters, which can lead to your e-mail getting sent to the junk folder, the whitepaper adds. Currently, two forms of e-mail authentication are being used: IP/Path-based and Cryptographic.