Due to some policy changes by free email services like Gmail, Yahoo, and AOL Mail that can limit the delivery of your campaigns, we recommend you choose a From email address that's associated with a domain you own.
If you don't currently have your own email domain or access to your organization's domain, we encourage you to register for one. When you use your own domain in your campaign's From email address, your email will look more professional, and you'll get better delivery rates.
In this article, you'll learn about options for registering your own domain.
After you set up an email address at your domain that you have with us, verify the domain to use it in MailChimp. Then, change the default From email address for your MailChimp list and update the contact email for your account.
Heavy senders may want to also consider using subdomains. Email clients don’t always treat different messages sent from a domain in the same way. For example, Gmail classifies marketing messages differently than order notifications or transactional messages like receipts.
To boost deliverability, use a subdomain for different message types so email clients can classify and identify your messages more easily. For example, send email marketing from an address like news@YourBrand.com, and send your transactional emails from an address like receipts@YourBrand.com.