Encrypt Gmail and any email with CipherMail Firefox

Encrypt Gmail and any email with CipherMail

Encrypt Gmail, Outlook or any email message using the S/MIME and certificates technology with CipherMail

Features & Capabilities

Send and receive encrypted email messages with any email account like Gmail, Yahoo, Outlook and many more using the S/MIME technology. CipherMail allows to exchange encrypted email messages with your Gmail, Yahoo, Outlook or any email address that you use. The encryption is S/MIME standard, the solution recommended by the security experts, and it is based on certificates. The certificates are generated on the fly when an email address is used. They are issued by an internal PKI that generated certificates with emailProtection key usage.

The main CipherMail features are:

  • S/MIME 3.1 (X.509, RFC 3280) email encryption.
  • Compatible with existing S/MIME clients (like Outlook, Thunderbird etc.).
  • Certificates for S/MIME email encryption are automatically generated for each contact.
  • PKI included in the solution to issue the certificates.
  • Modern user interface, with drag and drop of files, progress bar for file uploading, browser notifications, embed images into messages, keyboard shortcuts, multi-language mails, ..
  • Both message and attachments are encrypted.
  • Text plain and HTML email support. Both formats are encrypted.
  • Contact management.
  • Autocompletion of e-mail addresses.
  • Token-based security engine is used for protection from CSRF attacks.
  • Integration with Google using OAuth2.
  • Supports the mail server protocols SMTP and IMAP.
  • Email domains provisioned are gmail.com, gmx.com, icloud.com, outlook.com, yahoo.com, zoho.com, hotmail.com, live.com and hundreds more. If we do not support your email domain yet you can request it sending us an email message to redcoolmedia@inbox.com

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
RedCoolMedia
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/encrypt-gmail-ciphermail/
Email:
re*****@inbox.com
Website:
https://www.redcoolmedia.net

User Reviews

by 敬念*****, 2025-03-25

by 敬念*****, 2025-03-01

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by Ga*****, 2022-12-23
View all user reviews ›

Is Encrypt Gmail and any email with CipherMail Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Encrypt Gmail and any email with CipherMail requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Encrypt Gmail and any email with CipherMail has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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