mail clients slow on Linux

[techlists at phpcoderusa.com]

Hi,

I'm running Kubuntu 14.04 LTS on a Dell i5 w/ 8gb ram, Thunderbird 24.4 
and KMail 4.13.

I was running Thunderbird and had problems removing 200 emails at a time 
when there was a lot of them, say 15,000 in the folder.  My old slow Win 
7 laptop had no problem removing several hundred at a time.  I actually 
had to use my laptop to deal with removing emails.

Today I was unable to send email because Thunderbird said it could not 
write to the sent folder.  Nothing had changed as far as I know. From 
searching I found this was a problem with version 17. Server time out 
errors have been a problem today also.

I was thinking that moving to KMail might be better.  Not a complete 
fix.  I have an email account that has almost 12,000 emails in the 
inbox.  It pulled in the headers, but not the bodies.  When I go to am 
email that is dated before today it take 10 - 20.....30 or more seconds 
to retrieve the body.

Maybe my expectations are out of line.... I was thinking things should 
work faster given the power my machine has and that I am on a high speed 
connection.  Speed has been an issue for a while... since switching to 
Linux.

Mail is much more responsive on my laptop running Win 7 with a much less 
powerful CPU, slower HD and 1/2 the ram.  I'm puzzled as to how that 
could be.

Any suggestions much appreciated.

Thanks,
Keith