How to uninstall Mail Master on Windows
This record covers 网易邮箱大师 5.5.7.1008, installed through NetEase.MailMaster with machine scope. Back up the data folders below when retaining local data or settings.
Close the app
Close the app window and tray entry, then check Task Manager (Ctrl+Shift+Esc) for mailmaster.exe.Keep local data is checked by default in the vendor confirmation; leave it checked when retaining data.
Data and settings
| Location | Action |
|---|---|
%LOCALAPPDATA%\Netease\MailMaster |
Inspect contents; keep or back up local data |
Remove with the vendor uninstaller
Find the app in Settings › Apps › Installed apps and uninstall it. For the measured winget installation, you can also run the command below.
winget uninstall --id NetEase.MailMaster --exact
Check the result
Get-Process -Name 'mailmaster' -ErrorAction SilentlyContinue
winget list --id NetEase.MailMaster --exact
Test-Path "$env:LOCALAPPDATA\Netease\MailMaster"
No process output means no matching process was observed. A completed winget query with no match means the package is no longer listed; an error does not prove removal. Test-Path returns True if the data folder remains and False if that path is absent. True is expected when retaining data.
What Mole lists
%LOCALAPPDATA%\Netease\MailMaster is personal data, unchecked and excluded from bulk selection; the program folder and shortcuts are selected. The vendor confirmation had Keep local data checked, which was preserved. A native readback after removal confirmed that data, web and profile.ini remained, and the reviewed data folder was no longer falsely reported as newly appearing.
What this test covered
Removal used the vendor’s custom uninstall dialog.
Recorded in source tests and retests on Windows 11 ARM64 on 2026-10-03 and 2026-10-04. The released download, account sign-in, synced data and other installation channels were not verified. Delayed external-uninstall controls are sampled separately.