any other accessible email client for linux?

[Linux for blind general discussion]

I'm not sure about other distros, but on Fedora, my Seamonkey does have 
two menu invocations. One is the mail application and the other is the 
web browser. Both are located in my internet menu on my MATE desktop. 
Seamonkey mail will import mailboxes directly from an existing 
Thunderbird installation, and I am finding its accessibility with Orca 
to be quite good. Since I believe Seamonkey to be based on somewhat 
older versions of Thunderbird and Firefox, you may not see the calendar 
options, as you once needed an extension for that. Chat is also a 
separate invocation of seamonkey, so it shouldn't be in your main mail 
window either. The only thing that may possibly be considered a drawback 
is that opening a link in an email message in seamonkey will open the 
link in the seamonkey browser instead of the browser you set as the 
default. So if you want to open links in another browser, you will need 
to copy the link address to your clipboard. Other than that, I can 
recommend Seamonkey as a pretty good email application. It's not 
actually a bad browser either from my experience.
~Kyle