Is Mailtastic safe?

Clean risk

Mailtastic sends Salesforce OAuth token requests with a client secret embedded in its extension bundle.

During its Salesforce sign-in flow, Mailtastic posts the OAuth authorization-code exchange to login.salesforce.com/services/oauth2/token. The request includes a client ID, localhost redirect URI, and a client secret that is recoverable from the distributed JavaScript bundle.

chrome-publishersv1.0.1.25Chrome Web Store
1Risk
Who publishes it

chrome-publishers - no other listings under this identity, 1 shared hostname

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

Publisher
chrome-publishers

Shared hosts - 1 hostname

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.

cognism.com
Also called by 4 other listings, including Cognism - Sales Intelligence Extension, Cognism

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 1.0.1.25. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on salesforce.com

    https://*.salesforce.com/*

  • Read and change your data on mailtastic.de

    https://*.mailtastic.de/*

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

    tabs

  • See every page you navigate to, as you navigate to it

    webNavigation

  • Store data in your browser

    storage

  • React to what is on a page without reading the page

    declarativeContent

  • See, disable and uninstall your other extensions, including your security ones

    management

Where it sends data

Destinations our analysis observed Mailtastic 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.

  • login.salesforce.com

    Mailtastic sends data to login.salesforce.com. One other extension we have analysed sends data here.

Updated 30 September 2026mnmdoenafmegociachigocoeonmknghl