FlowCrypt: Encrypt Gmail with PGP

Simple end-to-end encryption to secure email and attachments on Google.

What is FlowCrypt: Encrypt Gmail with PGP?

FlowCrypt: Encrypt Gmail with PGP is a Chrome extension developed by https://flowcrypt.com, and its main feature is "Simple end-to-end encryption to secure email and attachments on Google.".

Extension Screenshots

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Download FlowCrypt: Encrypt Gmail with PGP Extension CRX File

Download FlowCrypt: Encrypt Gmail with PGP extension files in crx format, manually install Chrome extensions in the browser, or share the crx files with friends to easily install Chrome extensions.

Extension Usage Instructions

                        🟢 A simple end-to-end encryption to secure your emails and attachments on Google, including G Suite, 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.
 ✔ Generate private keys using the ECC and RSA (up to 4096-bit) algorithms.
 ✔ Use FlowCrypt’s own Attester public key server.
 ✔ Send and receive encrypted emails and attachments (up to 25MB, with previewing functionality) to anyone.
 ✔ Send and receive encrypted emails directly or through Encrypted Contact Page.
 ✔ Send password-protected emails to the recipient who doesn’t have any OpenPGP software (as well as receive such emails).
 ✔ Sign encrypted emails to let your recipients verify that the message is from you and that the content hasn’t been modified.

🌐 Website: https://flowcrypt.com/
📁 Source code: https://github.com/FlowCrypt/
📚 Documentation: https://flowcrypt.com/docs/
🧠 Knowledge Base: https://flowcrypt.com/blog/questions/
📱 Android & iOS apps: https://flowcrypt.com/download

📩 Looking forward to your feedback! Please email us at [email protected].                    

Extension Basic Information

Name FlowCrypt: Encrypt Gmail with PGP FlowCrypt: Encrypt Gmail with PGP
ID bnjglocicdkmhmoohhfkfkbbkejdhdgc
Official URL https://chromewebstore.google.com/detail/flowcrypt-encrypt-gmail-w/bnjglocicdkmhmoohhfkfkbbkejdhdgc
Description Simple end-to-end encryption to secure email and attachments on Google.
File Size 3.01 MB
Installation Count 91,253
Current Version 8.5.3
Last Updated 2024-02-09
Publish Date 2020-07-04
Rating 4.78/5 Total 355 Ratings
Developer https://flowcrypt.com
Email [email protected]
Payment Type free
Extension Website https://flowcrypt.com
Help Page URL https://flowcrypt.com/blog/
Privacy Policy Page URL https://flowcrypt.com/privacy
Supported Languages en
manifest.json
{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 2,
    "name": "FlowCrypt: Encrypt Gmail with PGP",
    "description": "Simple end-to-end encryption to secure email and attachments on Google.",
    "version": "8.5.3",
    "browser_action": {
        "default_icon": {
            "16": "\/img\/logo\/flowcrypt-logo-16-16.png",
            "19": "\/img\/logo\/flowcrypt-logo-19-19.png",
            "24": "\/img\/logo\/flowcrypt-logo-24-24.png",
            "32": "\/img\/logo\/flowcrypt-logo-32-32.png",
            "48": "\/img\/logo\/flowcrypt-logo-48-48.png",
            "64": "\/img\/logo\/flowcrypt-logo-64-64.png",
            "128": "\/img\/logo\/flowcrypt-logo-128-128.png"
        },
        "default_title": "FlowCrypt Encryption for Gmail",
        "default_popup": "\/chrome\/popups\/default.htm"
    },
    "icons": {
        "16": "\/img\/logo\/flowcrypt-logo-16-16.png",
        "19": "\/img\/logo\/flowcrypt-logo-19-19.png",
        "24": "\/img\/logo\/flowcrypt-logo-24-24.png",
        "32": "\/img\/logo\/flowcrypt-logo-32-32.png",
        "48": "\/img\/logo\/flowcrypt-logo-48-48.png",
        "64": "\/img\/logo\/flowcrypt-logo-64-64.png",
        "128": "\/img\/logo\/flowcrypt-logo-128-128.png"
    },
    "permissions": [
        "storage",
        "tabs",
        "https:\/\/flowcrypt.com\/*",
        "https:\/\/*.google.com\/*",
        "https:\/\/outlook.live.com\/*",
        "https:\/\/outlook.office365.com\/*",
        "https:\/\/outlook.office.com\/*",
        "https:\/\/graph.microsoft.com\/*",
        "https:\/\/login.microsoftonline.com\/*",
        "https:\/\/www.googleapis.com\/*",
        "unlimitedStorage"
    ],
    "content_scripts": [
        {
            "matches": [
                "https:\/\/mail.google.com\/*"
            ],
            "css": [
                "\/css\/webmail.css",
                "\/css\/sweetalert2.css"
            ],
            "js": [
                "\/lib\/purify.js",
                "\/lib\/jquery.min.js",
                "\/lib\/openpgp.js",
                "\/lib\/sweetalert2.js",
                "\/lib\/streams_web.js",
                "\/lib\/emailjs\/punycode.js",
                "\/lib\/iso-8859-2.js",
                "\/lib\/trusted-types.js",
                "\/lib\/emailjs\/emailjs-stringencoding.js",
                "\/lib\/emailjs\/emailjs-mime-codec.js",
                "\/lib\/emailjs\/emailjs-mime-types.js",
                "\/lib\/emailjs\/emailjs-addressparser.js",
                "\/lib\/emailjs\/emailjs-mime-builder.js",
                "\/lib\/emailjs\/emailjs-mime-parser.js",
                "\/js\/content_scripts\/webmail_bundle.js"
            ]
        },
        {
            "matches": [
                "https:\/\/www.google.com\/robots.txt*"
            ],
            "js": [
                "\/js\/common\/oauth2\/oauth2_inject.js"
            ],
            "run_at": "document_start"
        }
    ],
    "background": {
        "page": "\/js\/background_page\/background_page.htm"
    },
    "options_ui": {
        "page": "\/chrome\/settings\/index.htm",
        "open_in_tab": true
    },
    "web_accessible_resources": [
        "\/css\/webmail.css",
        "\/img\/svgs\/reply-icon.svg",
        "\/img\/svgs\/spinner-white-small.svg",
        "\/img\/svgs\/spinner-green-small.svg",
        "\/img\/svgs\/unlock.svg",
        "\/img\/logo\/flowcrypt-logo-19-19.png",
        "\/chrome\/elements\/compose.htm",
        "\/chrome\/elements\/pgp_block.htm",
        "\/chrome\/elements\/setup_dialog.htm",
        "\/chrome\/elements\/attachment.htm",
        "\/chrome\/elements\/attachment_preview.htm",
        "\/chrome\/elements\/passphrase.htm",
        "\/chrome\/elements\/add_pubkey.htm",
        "\/chrome\/elements\/pgp_pubkey.htm",
        "\/chrome\/elements\/backup.htm",
        "\/chrome\/elements\/verification.htm",
        "\/chrome\/elements\/shared\/footer.htm",
        "\/chrome\/elements\/oauth2.htm"
    ],
    "minimum_chrome_version": "96",
    "content_security_policy": "upgrade-insecure-requests; script-src 'self'; frame-ancestors https:\/\/mail.google.com 'self'; img-src 'self' https:\/\/* data: blob:; frame-src 'self' blob:; worker-src 'self'; form-action 'none'; media-src 'none'; font-src 'none'; manifest-src 'none'; object-src 'none'; base-uri 'self'; require-trusted-types-for 'script';"
}