QuickMail installs with a standard setup wizard and then keeps itself up to date. The guiding principle is that you are in control: the defaults are designed to keep you current with no effort, you are told when a new version has been installed, and every part of the automatic behavior can be turned off — QuickMail never stops you from updating manually instead.
Most people want QuickMail-win.msi. Choose it unless you know your PC has an ARM processor.
If your PC has a Snapdragon processor — the Surface Laptop and Surface Pro models sold with Snapdragon X chips, and similar machines from other manufacturers — choose QuickMail-win-arm64.msi instead. It is built specifically for those processors and runs noticeably faster on them.
To check which you have: open Settings → System → About and read System type. “ARM-based processor” means the ARM64 download; anything else means the regular one.
If you are unsure, take the regular QuickMail-win.msi. It works on every supported PC, including ARM ones — just not as quickly on those. The ARM64 download will not start at all on a non-ARM PC, so that is the guess worth avoiding.
The two versions are otherwise identical: same features, same settings, same data.
Versions before 0.8.0 used a different installer, so moving onto the self-updating track takes one manual step:
If you have been running the regular QuickMail on a Snapdragon PC, you can switch to the ARM version to get better speed and battery life. QuickMail will not make this switch for you — automatic updates stay on the version you installed — so it is a one-time manual change.
QuickMail mentions this once when it notices it is running on an ARM PC, and the Help menu then keeps a Get the ARM Version entry that brings you back to this section, where step 2 links to the download. That entry appears only on ARM PCs running the regular build; you can also reach it from the command palette. To switch:
Do not skip step 1. Running the ARM installer on top of a regular QuickMail of the same version does not replace it — Windows treats the two as separate programs, leaves the regular one in place, and reports success. QuickMail keeps starting exactly as before, so nothing tells you the switch did not happen. Uninstalling first is what makes it work.
To confirm the switch worked, open the Help menu after restarting. Get the ARM Version is gone once you are on the ARM version, so if it is still listed, you are still running the regular build.
If it is still listed, the ARM installer did not replace anything. Uninstall QuickMail from Settings → Apps — choosing No again when asked about your data — and then start over from step 1. Do not try to judge this from Settings → Apps itself: both builds report the same name and the same version number there, and only one QuickMail entry is ever listed, so it looks identical whichever one you have. The Help menu is the reliable check.
From then on, automatic updates keep you on the ARM version. This is a one-time step — there is nothing further to do, and no need to repeat it for future releases.
Each time QuickMail starts, it quietly checks for a newer release in the background. The top entry of the Help menu always shows the result — “No updates available — running version X.Y.Z” or “Update available: vX.Y.Z” — so you can confirm where you stand at any moment.
When an update is found, QuickMail announces it once, downloads it quietly in the background, and installs it automatically the next time you exit and reopen the app. There is no download page, no installer to run, and no security warning — and nothing interrupts what you are doing.
If you would rather not wait for your next restart, activate the Help menu update entry. The QuickMail Update dialog offers three choices:
So you always know when a version change has happened, the first start after an update shows a QuickMail Update Installed dialog confirming the new version, with the same See what’s new link. Press Exit or Escape to dismiss it; it appears only once per update.
An update never touches your mail, accounts, or settings.
Two settings in Settings → Advanced, under Updates, put the whole mechanism under your control:
QuickMail.exe on the same releases page — or
QuickMail-arm64.exe for a Snapdragon PC — is a single-file
version that runs from anywhere with no installation — nothing is
written to Program Files or the registry, and it never updates itself.
The Help menu tells you when a new version is available; updating is a
manual download of the new exe, replacing the old one. Your data is
shared with an installed copy, so you can move between the two
freely.
Remove QuickMail from Settings → Apps as usual. After the app is removed, QuickMail asks whether to also delete your data — accounts, settings, contacts, rules, templates, saved views, cached mail, and saved passwords. Choose No (the default) to keep everything, so reinstalling later picks up exactly where you left off; choose Yes to remove it all.