Gmail HTML Editor is a email extension for chrome. it's a free extension and is featured in Productivity, it has 2,000+ active users since released its first version, it earns an average rating of 3.33 from 6 rated user, last update is 481 days ago.
Easily edit emails you're composing in Gmail as HTML, allowing for a whole new level of customizability. Adds a button to Gmail "New Message" popup to allow emails you're composing to be edited as HTML. The extension also works in the "mailto" screen.
You could download the latest version crx file or older version files and install it.
English.
100% user give 5-star rating. Read reviews of gmail html editor
You could find more help information from gmail html editor support page.
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Does exactly what it says on the tin - allows me to edit the raw HTML of a G Mail, including adding HTML from other sources. Works
Works great - just needed to reload gmail page to get it to show up. FYI, doesn't show up in tabs where gmail was already open when the extension was installed. Worst case, try restarting your browser.