Free online email providers seem to have gotten rarer over the years as the field has matured and consolidated. Many once free webmail providers have become paid services or have gone out of business. The main choices these days are provided by the large internet companies that dominate the industry although they are tainted by the spying scandal. Still as the demise of Lavabit has shown even the smaller players likely have not escaped attention and are vulnerable to government pressure making true security and privacy on the internet probably a figment of the imagination.
AOL Mail
Excite
Facebook Messages
Gmail
GMX / Mail.com
iCloud
Inbox.com
Lycos Mail
MyWay Mail
Outlook.com
Yahoo Mail
Yandex Mail
Zoho Mail
Pay Only
Bigfoot Webmail
Fastmail
Hushmail
Rackspace
