webext-allow-html-temp
View selective HTML-Mail
Description
Allows one to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your default mode).Upload more screenshots
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Homepage
https://addons.thunderbird.net/en-US/thunderbird/addon/allow-html-temp
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Install webext-allow-html-temp