Limitations of Free Email Addresses
Your From email address is the address you use to send email to your contacts. When contacts receive your emails, the From email address helps to identify you as the sender. If you choose to use a free email service provider (ESP) like Yahoo or AOL for your From email address, there are some limitations you should be aware of.
The primary limitation of an email address from a free service provider is that you don’t own the domain. This keeps you from controlling that domain's delivery policies.
About free email and DMARC
To better understand the problem with free email domains and delivery, it helps to know about DMARC, or Domain Message Authentication, Reporting, and Conformance.
DMARC is basically a validation system for incoming email. It checks that the domain of the From email address matches the domain the message is actually being sent through. If the domains don’t match, the email fails the DMARC check.
DMARC policies also tell receiving servers how to handle email that appears to come from a domain, but has failed the DMARC check. Free email domains often have policies that tell these receiving servers to immediately reject mail that fails DMARC
How to resolve:
Purchase a domain:
Purchase a domain to use for your business and marketing email. You can use your purchased domain with your emails within Adit. This helps make your entire online presence more recognizable to your audience and may improve delivery of your email campaigns.