Yahoo Mail is a web-based application for email management that allows you to add any email address (Gmail, Outlook, or AOL), make it easy to organize your inbox, and put all your attachments & photos in one place.
For the full comparison between the free and paid versions, click here.
Zoho Mail is encrypted, ad-free, and part of a larger office productivity suite integrated with other Zoho apps. It allows you to set up your custom domain to build brand visibility and credibility.
GMX Mail is a reliable advertising-supported email service that provides spam and virus filtering while giving a large file attachment limit (50 MB) and lots of email storage space (65 GB). To put that into perspective, that’s around 500,000 emails!