Opera Mail is an open source and free email client developed by Opera Software. The Opera mail email client is a slick and flexible interface, so that it will satisfy all email needs. It has a Threaded view. Spam protection feature is also available in opera mail. Allow users to browse websites within tabs.
Opera Mail supports TLS. TLS enables high-encrypted communications between an email client and a server. TLS allow password and data to send on the Internet and others will not be able to spy it. Opera Mail uses POP3, IMAP, SMTP, and NNTP protocols etc. Opera Mail is available for Microsoft Windows, Mac, and Linux.