[kmail2] [Bug 477434] New: Timeout during importing a very high amount of mails

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https://bugs.kde.org/show_bug.cgi?id=477434

            Bug ID: 477434
           Summary: Timeout during importing a very high amount of mails
    Classification: Applications
           Product: kmail2
           Version: unspecified
          Platform: Debian stable
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: misc
          Assignee: kdepim-bugs at kde.org
          Reporter: dennis.hh at hotmail.com
  Target Milestone: ---

SUMMARY
***
My day to day email box is an Outlook.com address that I've had since about 10
years and as such contains several (ten/hundred)thousands of emails. It took me
one or two restarts of KMail to fetch all the emails; it seemed to timeout
after some point.

I'll be glad to provide additional information on this
***


STEPS TO REPRODUCE
1. Have an Outlook.com email box with a very high quantity of emails (order of
magnitude of 10,000 to 1,000,000)
2. Start KMail on a "clean slate", i.e. without configs
3. Import the Outlook.com email address. KMail will now import older items
first (at least that was the case for me)
4. Sort emails by date descending (if KMail is not set to do so automatically)
to easily see which email is the last one imported


OBSERVED RESULT
At some point, it stops importing any items; you can see that no newer emails
are imported now. If you close and reopen KMail now, the loading continues

EXPECTED RESULT
KMail will not timeout during processing of this large mailbox and continue to
download emails until all the emails are fetched

SOFTWARE/OS VERSIONS
Operating System: Debian GNU/Linux 12
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.0-13-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i7-5500U CPU @ 2.40GHz
Memory: 7.7 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 5500
Manufacturer: Dell Inc.
Product Name: Inspiron 5749
System Version: A06

ADDITIONAL INFORMATION

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