The following tables compare general and technical information for a number of notable webmail providers who offer a web interface in English.
The list does not include web hosting providers who may offer email server and/or client software as a part of hosting package, or telecommunication providers (mobile network operators, internet service providers) who may offer mailboxes exclusively to their customers.
General information on webmail providers and products
How much information users must provide to verify and complete the registration when opening an account (green means less personal information requested):
Features to reduce the risk of third-party tracking and interception of the email content; measures to increase the deliverability of correct outbound messages.