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batpets
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Posted: 14 September 2026 at 1:57am | IP Logged Quote batpets
Hello.Afterlogic WebMail Pro PHP 9.8.4.build6-build-o3 here.
I have strange problem with large temp files in /data/temp/.cache/System/.. directory.

It seems that all files in this location are some emails-sent or received. I managed to found that most of them are from a mailbox with large ammount of emails. At some point I have a .zip files generated with size like 8 GB or 16 GB, which seems to be cleared by itself, but before that I am hitting full disk space.
How to manege to resolve this issue.
Thank you.
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Igor
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Posted: 14 September 2026 at 3:43am | IP Logged Quote Igor
Hello,

The location in question is indeed used by temporary files - when a complex mail is viewed or generated, this is where messages are temporarily stored. My understanding is, it does work as expected, and there are no files there which are more than a couple days old - is that correct?

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Igor, Afterlogic Support
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batpets
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Posted: 15 September 2026 at 4:40am | IP Logged Quote batpets
Yes, all of them are from today or previous day. Is it safe to manually remove such files, especially big zip files.
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Igor
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Posted: 15 September 2026 at 4:43am | IP Logged Quote Igor
The files should automatically be removed after 2 days, I believe. If you are certain that nobody currently works with those data it's safe to remove them, otherwise if, say, a message is being composed at the moment, it could potentially be damaged by removing those files.

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Igor, Afterlogic
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Prutux
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Posted: 20 September 2026 at 9:47am | IP Logged Quote Prutux
Hi,

I had a similar look at this, and my guess is the Import/Export Mail feature. When someone exports a folder, WebMail Pro zips every mail in it, so on a huge mailbox you can easily end up with several GB of temporary data, which would match the 8 or 16 GB files you're seeing. I'd start by checking who is triggering it, using the file timestamps and your web server logs. If you don't need that feature, you can turn it off by setting `Disabled` to `true` in `data/settings/modules/ImportExportMailPlugin.config.json`. If you do need it, moving `data/temp` to a bigger partition and adding a small cron job to delete old files there should stop the disk from filling up.

Hope this helps!
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