Smileyfixer

Addon originally developed by Richard Quirk (see https://github.com/richq/smileyfixer). This is a modified version for Thunderbird 78.4+ using MailExtensions.

Description from the original readme:

Outlook sends emails with a J instead of the smiley :)

The reason is due to the Wingdings font face, which is missing on non-Windows platforms. This add-on fixes the most common situations.

More details:

http://lifehacker.com/5574668 http://superuser.com/questions/159334

The code for the core logic and the locales are taken from the original addon that is published under Apache version 2.0 license. The remaining code for MailExtensions is taken from the nicely written addon colorediffs by Qeole licensed under MPL 2.0.

Installation

Clone the repository and build the extension.

    git clone https://github.com/matthias-g/smileyfixer.git
    cd smileyfixer
    make

In Thunderbird, go to the "Add-ons Manager" and use "Install Add-on From File..." to install the resulting xpi file.