There is so much outdated information on the Internet. This answer works for latest QEMU:

Delete email basing on date, or more complex filters.

Some chinese idiots love using non-standard charset. For example, "360 secure archive" is using EUC-CN. They are trying to force everyone to install their shits, but we can crack it.

You might be receiving millions of spamming email. Why it happens and what should I do? This article provides some information.

如果你加入了一些Telegram中文群组, 你会遇到大量陌生帐号用中文私聊你, 发送广告.

A solution to use delta airline in-flight WiFi for free, without speed limit. Works for gogoinflight.

If your Synapse is using too much disk space, or your postgresql database is too large. Refer to this guide to clean it up.

Many bad programmers are installing non-ASCII input method in their computers, and then put some highly secret bugs in code. What's worse, powershell doesn't report these error, and simply causing unpredictable behaviors.

You have an annoying application, which sets itself to open everything and fuck everything up. But the `default application` in your DE is not good