I was devastated when "upgrading" Opera on Kubuntu 16.04 only to find out the OPERA EMAIL component got removed. I sit with gigabytes of email, and by far Opera Email (using large IMAP folders) was the fastest
email client on the planet.
Please please please port the Opera Email application to Linux! You already have the source code from
the last version, if it cannot be ported to new render engine, please just extract it out of the old
version using the older render engine, and make it a loose-standing application.
Both Kmail and Thunderbird are MUCH slower than Opera Email, and Opera email (being QT-based), fits in perfectly with KDE Desktop.
Can the Opera Developers please comment on this plea?