HTMaiL: Insert HTML into Gmail, Outlook and Yahoo Mail
Tools
Edit and easily insert HTML code into the body of your email message in Gmail, Outlook, and Yahoo Mail.
Users
30K
Rating
4.3
Reviews
50
7D Growth
0|0%
Stable signalNo paid features detectedLow-risk permissions
Gmail HTML Editor
Edit Gmail emails as HTML.
Users10KCurrent public install base
Rating3.0Store average score
Reviews15Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
6 assetsGmail HTML Editor Media preview
Trend
User growth trend
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User Growth Over Time
Rating trend
7-day rating trend
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7-day rating change
Start
3.00
Latest
3.00
7-day rating change
0.00
2026年7月14日2026年7月20日
Growth overview
Daily, weekly, and monthly growth
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1-day growthNo data
----7-day growthFlat
00%30-day growthNo data
----Technical snapshot
Version, languages, and crawl freshness
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Version1.2.0
ManifestV3
Size152KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
Review the store description, core capabilities, and common use cases.
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.
Reviews
Recent review snapshot
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Store average score3.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average3.2Average computed only from synced review bodies below
Reviews with text12Synced review bodies
Total ratings / reviews15Chrome Web Store public rating/review count
Store average score: 3.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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No button is added to Gmail.
Sorry, not working. No button is added to Gmail. > "Adds a button to Gmail to allow emails to be edited as HTML"