Is MailMaestro - Gmail AI assistant safe?

Low risk

MailMaestro reports the active Gmail account email address to app.maestrolabs.com when Gmail loads.

When its Gmail content script runs, MailMaestro reads the Gmail account email address from the page title and sends it to its backend. The request goes to https://app.maestrolabs.com/report/gmail-user/ after the Gmail page finishes loading.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

MailMaestrov1.35.3Chrome Web Store
15Risk
Who publishes it

Maestro Labs Pte. Ltd. - no other listings under this identity, 7 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
MailMaestro
Declared legal entity
Maestro Labs Pte. Ltd.
Registered contact
Adrian Cabrera

Shared hosts - 7 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

app.userpilot.io
Also called by 5 other listings, including Lavender
find-w.userpilot.io
Also called by 5 other listings
find-x.userpilot.io
Also called by 5 other listings, including Lavender, Gain
find-y.userpilot.io
Also called by 5 other listings, including Lavender, Gain
find-z.userpilot.io
Also called by 5 other listings, including Gain
find.userpilot.io
Also called by 5 other listings, including Gain
uploads.userpilot.io
Also called by 5 other listings, including Lavender

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.34.3. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to. The current listed version is 1.35.3, which we have not unpacked yet.

  • Show a panel beside the page

    sidePanel

  • Act on the current tab, but only after you click the extension

    activeTab

  • See the address and title of every tab you have open

    tabs

  • Sign you in with your Google account

    identity

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed MailMaestro - Gmail AI assistant contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • app.maestrolabs.com

    MailMaestro - Gmail AI assistant sends data to app.maestrolabs.com. No other extension we have analysed sends data here.

Updated 30 September 2026hjdkljkgenkplcgeecgjjgijpipnneai