Hi Jack!

On 05/25/2021 10:57:31 AM Tue, Jack via balsa-list wrote:
Hello all,

I've just returned from a three weeks vacation.  While away, I only used imap 
for all email access.  I'm now trying to POP3 download all my email.  All mail 
servers have gone fine except for gmail.  There are a bit over 200 messages, 
and after somewhere around half of them were downloaded, it started taking over 
twenty seconds for each additional message.  Based on watching top and on 
previous experience, I believe the problem is that Balsa applies inbox filters 
after each new message is downloaded, and this calls html2text on every message 
in the mailbox, but now I have over 150 messages in my mbox inbox.  In the 
short term, can anyone suggest a way to find which one is likely causing 
problems?  In the long run, would it make sense not to apply filters to a 
mailbox until all pending actions are done - specifically fetching a whole 
bunch of POP3 messages?

I've also tried deleting a few messages at a time from the INBOX, but it just 
hung, presumably having problems rewriting the mbox file.  I might try deleting 
all the remaining new messages from the INBOX and then copying one at a time 
from the IMAP inbox.

I have a vague recollection that in the past, the problem was caused by some 
HTML only message with invalid HTML that all browsers and other email clients 
(TBird) handle fine.

(Hopefully I'll be able to find any answers to this by using IMAP for the 
interim.)

Thanks for any suggestions.

Jack

The long-run fix could get complicated. I've opened an issue [1] where we can 
discuss strategies for avoiding these kinds of delays.

In the short run, if the delays are indeed caused by on-reception filtering, 
you could perhaps just temporarily disable the filters.

Best,

Peter

[1] https://gitlab.gnome.org/GNOME/balsa/-/issues/58
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