Geary is an IMAP mail client for GNOME 3.
Ranked in these QuestionsQuestion Ranking
Pro Beautiful UI
Everything about the look and feel of Geary is a breath of fresh air after the clunkiness and ugliness of it's competitors.
Pro Fast and responsive
Geary is faster than most e-mail applications, upon starting the program or even just browsing in folders.
Pro Straightforward and simple UI
Setting up accounts is a simple as putting in the users e-mail address and password.
Pro Threaded conversations
Threaded conversations means all subsequent replies are view-able underneath the initial e-mail.
Pro Native GNOME application
It looks and works like a GNOME application should, so it Just Works™.
Con No horizontal layout
There is no optional horizontal layout for those that want to be able to view their emails headers across the full screen.
Con Made for Gnome 3
It may look out of place in any other desktop environment.
Con No incoming message rules
Con No images in HTML signatures
Whilst it is possible now to add a HTML or plain text signature per account, there is no support for per images in the signatures. This is a must for when an employer imposes a set signature with images.
Con No native Exchange support
Whilst possible if your Exchange server and account are using Davmail as a proxy, at the moment you can't natively add an Exchange account.
Con No proxy support
Seems like it can't retrieve email from behind proxy.
Con No PGP
No encryption available.