Mailvelope - Secure your email with PGP
Communication
Protect your email conversations and attachments on Gmail, Nextcloud, Outlook & more with PGP and end-to-end encryption.
Users
100K
Rating
4.4
Reviews
436
7D Growth
0|0%
Stable signalNo paid features detectedMedium-risk permissions
FlowCrypt: Encrypt Gmail with PGP
Simple end-to-end encryption to secure email and attachments on Google.
Users70KCurrent public install base
Rating4.7Store average score
Reviews359Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
6 assetsFlowCrypt: Encrypt Gmail with PGP Media preview
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User Growth Over Time
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7-day rating change
Start
4.72
Latest
4.72
7-day rating change
0.00
2026年7月15日2026年7月21日
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1-day growthFlat
00%7-day growthFlat
00%30-day growthDeclining
-10K-12.5%Technical snapshot
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Version8.5.13
ManifestV3
Size3.64MiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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🟢 A simple end-to-end encryption to secure your emails and attachments on Google, including Google Workspace, Business, and Enterprise using OpenPGP.
🟢 FlowCrypt lets you use PGP encryption by generating a private and public key. It uses the recipient’s public key to encrypt the email, and only the recipient’s private key can decrypt the message and reveal its content.
🟢 Adds a Secure Compose button to Gmail, allowing you to send private PGP-encrypted emails when you choose to.
🟢 We update the extension regularly (see the "Updated" field to the right).
FlowCrypt allows you to:
✔ Set up the extension in just a few clicks.
Reviews
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Store average score4.7Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.8Average computed only from synced review bodies below
Reviews with text276Synced review bodies
Total ratings / reviews359Chrome Web Store public rating/review count
Store average score: 4.7. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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I have approached this need in the past and it wasn't pain free. Now there's CryptUp, an elegant, simple and powerful solution. Thank you Tom and the Cryptup team. I don't esitate to encourage my Gsuite customers to use Cryptup, Tom has been very responsive to my doubts and questions. The team in CryptUp gives an incredible support, even an unexpected implementation on the software was made in 5 stars record time just giving some feedback. It was a big and wonderful surprise. Will keep on following and using CryptUp. Sending secure messages from Gmail has never been easier.
So far so good. Slick, well-integrated app. Responsive developer. Would be great if there were the option to buy a lifetime license instead of paying a monthly fee for the advanced features. Admittedly, the most important features are free.
This is thus far the most integrated and user-friendly pgp email extension I've used. Public keys are automatically uploaded, which means the only extra step required during setup is importing your own private keys if you're already in the pgp universe. Unlike Mailvelope a second step isn't required to encrypt and decrypt emails, nor are you required to import public keys one at a time. . Pgp is the most realistic method for encryption across multiple email platforms (unlike Protonmail which has an entirely exclusive and proprietary environment), and CryptUp has made it the most painless and fluid experience. The only thing you'll have to do is manually input and allow the Cryptup cookie if you have "block cookies from third parties" enabled. Otherwise it's all good.
Really well integrated app. Tom was very responsive - there was an issue with a change Google did to their login process which caused the app to not install right, but Tom worked patiently with me directly to sort the issue out. The result is v4.0.4.
I needed something fast and seamless - this was perfect. I was up and running in less than 15 minutes ... I felt better about having to send sensitive information through gmail. Thanks Tom!
Works great!
Setting up this program at work. it is seamless and easy to use. I had one minor issue that came up during set up for a colleague. After one email describing the issue, the developer contacted me in under an hour with the fix to the issue. It was painless and easy. I would strongly recommend this app to anyone who needs to secure emails.
Very useful extension, great technical support ! Thank you Tom and his team !
In a world where security is so important there is nothing better than peace of mind. I would recommend CryptUp to any friends or family looking for just that :) Thank you to Tom and his team, great product. I Love it :)
Amazingly written! Smooth and seamless integration with inbox.google.com and gmail.com (I understand inbox not officially supported yet, but it just goes to show how well their API consumption is if it works in both). The auto creation and publishing of keys is a fantastic feature! It makes using it so simple for email encryption noobs like myself! Highly recommend!!! :)