Installing
There are three ways in. You only need one, and which one depends on how you read your mail.
Which one do I want?
| If you read mail in… | Choose | Because |
|---|
| Outlook, Thunderbird or Apple Mail on a computer | Desktop application | Works with any mail program, and can protect everything you send automatically |
| Gmail or Outlook in a browser tab | Browser plugin | Banners appear on the page itself |
| Outlook, and your organisation manages add-ins | Outlook add-in | Installs centrally, no download per person |
You can use more than one — they share nothing except your recovery phrase, which you can
enter on each device.
The desktop application
There is no installer, and nothing is added to your system beyond the app itself.
- Download the version for your computer from the downloads section.
On a Mac, follow the Mac steps below first.
- Open it. The interface opens in your browser, and the app keeps running quietly in the background.
- Choose a passphrase. This protects the settings stored on this computer.
- Write down the twelve-word recovery phrase it shows you. See
your recovery phrase — this is the one step you cannot redo later.
- Enter your e-mail address and confirm your mailbox when the code arrives.
Your computer will warn you. On Windows: "Windows protected your PC" —
choose More info, then Run anyway. On a Mac, see the steps below.
This happens because the files are not yet signed with a paid publisher certificate. It
is a real warning about a real gap, and you are right to be cautious about it: only install
software from a source you have reason to trust.
On a Mac
One download for every Mac, Apple Silicon and Intel alike. It needs macOS 12 Monterey or later.
- Download ProtectMyMail-macOS.zip, and open it if your browser has not already.
You get ProtectMyMail.
- Drag ProtectMyMail into your Applications folder. Do not skip this: starting
automatically when you log in only works for an app that lives in Applications.
- Double-click it. macOS says it cannot verify the app — choose Done.
- Open System Settings → Privacy & Security, scroll down to the line about
ProtectMyMail, choose Open Anyway, and confirm with your password.
- The interface opens in your browser. From now on ProtectMyMail opens with a normal double-click.
On macOS 14 Sonoma and earlier, steps 3 and 4 can be one: right-click ProtectMyMail, choose
Open, and confirm.
It has no Dock icon. ProtectMyMail runs in the background and shows itself in
your browser. Double-click it again to bring the interface back, and choose Quit,
top right in the interface, to stop it.
The browser plugin
Chrome and Edge, for Gmail and Outlook on the web. It is not in the Chrome Web Store yet,
so it installs manually.
- Download protectmymail-extension.zip and unpack it to a folder you will keep.
Deleting that folder removes the plugin.
- Open chrome://extensions (or edge://extensions).
- Turn on Developer mode, top right.
- Click Load unpacked and select the folder.
- Click the plugin icon and either create a key or enter a recovery phrase you already have.
Open Gmail. Banners appear on messages by themselves, and two buttons appear when you
write one.
Updating it
A plugin installed this way does not update itself. To move to a new version:
- Download protectmymail-extension.zip again and unpack it into the same
folder, replacing the files that are there.
- Open chrome://extensions (or edge://extensions) and click the reload
arrow on ProtectMyMail. The version number under its name changes.
Use the same folder. The browser knows a manually installed plugin by the
folder it was loaded from, and keeps its data — your key included — under that name. Loaded
from a different folder it is a new plugin that starts empty, and only your recovery phrase
brings your key back. Replace the files in place and your key stays where it is.
The Outlook add-in
This one is not downloaded — Outlook fetches it from a web address.
- In Outlook, open Get Add-ins → My add-ins →
Add a custom add-in → Add from URL.
- Enter
https://anuumail.com/manifest.xml.
- A ProtectMyMail button appears when you read and when you write a message.
Not yet verified on a live tenant. The add-in passes Microsoft's manifest
validation and works against a test setup, but it has not been run inside a real Microsoft
365 organisation. Treat it as a preview. The Outlook guide
says what is and is not known to work.
Confirming your mailbox
All three ask you to do this once. A short code is mailed to your address; you paste it
back. That is what turns Signed into Verified sender for everyone who
receives your mail. Until you do it, your mail is still protected against alteration — it
just cannot prove the address is yours.
Removing it
- Desktop: quit it and delete the file. Its settings live in your user
folder under ProtectMyMail and can be deleted too.
- Browser: remove it on the extensions page, or delete the folder.
- Outlook: remove it under My add-ins.
Nothing you have already sent changes. Signatures already published stay valid; they are
statements about messages, not a subscription.
Next: everyday use.
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