PassLok for Email

PassLok for Email

High security email encryption for Gmail, Yahoo, and Outlook online. PassLok is in no way associated with those services. Easy to use, powerful extension, which includes message hiding, forward secrecy and attachments, and runs also on Chrome.

PassLok for Email promo image
What is PassLok for Email?

PassLok for Email is a Firefox add-on that offers easy-to-use, end-to-end secure encryption for email, real-time chat, and file encryption. It does not rely on servers, ensuring immunity to hacking or government intervention.

Stats date:
By: F. Ruiz
Users: 53 ▲ 1
Rating: 5.00 (1)
Version: 0.5.10 (Last updated: 2023-03-23)
Creation date: 2016-06-20
Weekly download count: 1
Firefox on Android: No
Manifest version: 3
  • storage
  • alarms
Host permissions:
  • http://**
  • https://**
  • http://**
  • https://**
Size: 209.78K
Email: Click to see
URLs: Website
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood

Other platforms

Not available on Chrome
Not available on Edge


Easy, end-to-end secure encryption for email, plus real-time chat, that does not rely on servers and is therefore immune to hacking or government intervention. Right now PassLok for Email supports Gmail, Yahoo, and Outlook online.

--PassLok for Email is incredibly easy to use--

To encrypt a message or file, just click the PassLok icon at the bottom of the Compose or Reply box. A popup will take your private message and encrypt it with the click of a button. Then you can send it out like any other message, or as an attachment.

To decrypt it, click the PassLok icon at the top of the encrypted message. A popup will show the decrypted message or file immediately, or will tell you if there is any problem.

PassLok asks you for your Password only once. It can be anything you want, so you can actually remember it. PassLok will evaluate its strength and compensate for its weakness by lengthening the computations. It won't be stored or sent anywhere, and PassLok will forget it after five minutes of inactivity.

If you want to change your Password, go ahead and start using a new one when PassLok asks you for it. You may be asked for the old Password if PassLok can't decrypt something, but otherwise that's all you'll have to do.

--Lots of power in a slender package--

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User reviews
Of course it would need an audit to be bullet proof.
by tplaccnt, 2017-11-17
View all user reviews
Risk impact

PassLok for Email is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install PassLok for Email if you trust the publisher.

Risk likelihood

PassLok for Email is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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