Mozilla Thunderbird vs eM Client

Mozilla Thunderbird offers a huge amount of extensions to expand the usability and options of the client.

Version after version, Mozilla Thunderbird works as expected.

Mozilla Thunderbird offers a flexible filtering system with the ability to set flags and read/unread, as well as sort/assign to new mail directories. There are also numerous plugins available to assist in the filtering.

The app design of Mozilla Thunderbird has not changed significantly since its beginning, making its learning curve almost non-existent.

More options and extended settings than most power users could dream of. Get it working how YOU want.

Install pCloud plugin for Thunderbird and your files (upto 20 GB free storage included) will be received as download links

They've been developing and improving it consistently for years.

Such as sorting through categories, etc.

It is free for 2 accounts and as long as you don't use it commercially. Paid version comes with support and can handle more than 2 accounts.

eM Client sends straight .pdf files for fax messages flawlessly.

eM Client seamlessly integrated the Quick Text extension that was available on Thunderbird. This makes it easy to quickly auto-insert dynamic text, based on many variables, saving time and the need to tediously repeat manual text replies.

It saves space, unlike Thunderbird.

eM Client includes integrated chat, so you don't need another application for chatting with your friends. All common chat services supported (Google chat, Jabber and others).

But only because it has no alternative.

It provides (almost) complete Gmail functionality (calendar, tasks, chat, contacts), while offering advantages of an application: offline use, more e-mail providers in one place, very good design, support, etc.