I have just installed Opera Mail 1.0 on a new computer. First, I need to copy all data in old installation and also I want to chane the storage location of Opera Mail because of I don't have enough space on drive C. How can I change it? Is somone knows this issue?
Thanks...

Hmm, have you read the topic where you commented in? The answer was already given.
Or i am missing something?

Thanks...

leocg has the right idea. If I copied the mail folder to a new location and started Opera Mail I received the following error:

While Opera Mail is closed, if you set:

[Mail]
Mail Root Directory=D:\hold\Opera\Mail

in "C:\Users\XXX\AppData\Roaming\Opera Mail\Opera Mail\operaprefs.ini"

and move your mail folder so that it's in "D:\hold\Opera" and then start Opera, mail should work just fine and behave just like it did when the folder was in the original location. You shouldn't have to set up accounts again or install Opera Mail again or anything like that.

Error While Initializing Mail

There was a problem initializing Opera Mail.

Failed to open the following file:
=D:\hold\Opera\mail\omailbase.dat

..BUT if I do

• a fresh install of opera mail
• copy the mail folder to new location
• start Opera Mail and setup accounts

THEN it works!

Notes:

• Tried reboot before starting Opera Mail after copying folder and setting Mail Root Directory but it still gets error
• Changing the install path during install changes the program folder but not the data folder
• Be sure to do a fresh install and change Mail Root Directory before setting up email

Thanks leocg!
Karl

I install it on an encrypted virtual drive to keep my mail contacts and correspondence safe, and easier to make backups.

There's no real advantage of using the standalone mail client. Even if you're using Opera 20 as your default browser, you may as well keep Opera 11 or 12 installed just for your email. There are a few side benefits too, like send link by email.