TB by default saves 1x file per folder (e.g. MBox like) -
This means depending on your storage configuration and how you use
folders, potentially writing 100MB, 1G, 10G, etc. back to disk on folder
content change.
For batch processing though, I use the CLI tools - thunderbird
is view/compose only (procmail/formail/archivemail/offlineimap,etc)
I was hitting performance probs on bigger folders,
and setup some more strict archiving to archive older mails to
subfolders/zap offline using an 'archivemail' job, etc,
and the problem went away, with TB being quite snappy.
as I understand it there was some effort to support
1-file-per-email, which might be an option now,
but this has it's problems too.
Outlook has it's PST corruption hell...
Basically, in my opinion, email is a pain, each client shows it differently,
though I am admittedly not up to speed on Opera Mail.
This means depending on your storage configuration and how you use folders, potentially writing 100MB, 1G, 10G, etc. back to disk on folder content change.
For batch processing though, I use the CLI tools - thunderbird is view/compose only (procmail/formail/archivemail/offlineimap,etc)
I was hitting performance probs on bigger folders, and setup some more strict archiving to archive older mails to subfolders/zap offline using an 'archivemail' job, etc, and the problem went away, with TB being quite snappy.
as I understand it there was some effort to support 1-file-per-email, which might be an option now, but this has it's problems too.
Outlook has it's PST corruption hell...
Basically, in my opinion, email is a pain, each client shows it differently, though I am admittedly not up to speed on Opera Mail.