HTMaiL: Insert HTML into Gmail, Outlook and Yahoo Mail icon

HTMaiL: Insert HTML into Gmail, Outlook and Yahoo Mail

by dziul · htmail.dev · Tools
FeaturedEstablished publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Edit and easily insert HTML code into the body of your email message in Gmail, Outlook, and Yahoo Mail.

Users
30K
0 in 30 days
Rating
4.3 / 5
−0.06 in 30 days
Ratings
52
+1 in 30 days
Store rank
#4,800
#4,157 among extensions
Version
7.7.1
updated 14 Oct 2026

Users

monthly, 3 years
1,00016K30KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 30,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
62952Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 52 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About HTMaiL: Insert HTML into Gmail, Outlook and Yahoo Mail

This extension will allow you to easily insert HTML code into the body of the message from your favorite webmail service: Gmail, Outlook, and Yahoo Mail. There is no longer a need to limit yourself to the basic formatting options provided by webmail services. Experiment and transform the way you create and send emails, making your messages more attractive and professional. OUR WONDERFUL among other extensions: ★ The extension integrates seamlessly into the compose interface of your favorite webmail ★ It has an HTML editor that offers a simple and intuitive interface, where you can create/paste/import your custom HTML code and preview the result before inserting it into the body of the message ★ Insert HTML template from the selected text or the current cursor position ★ Converts internal and external CSS styles into inline styles ensuring HTML insertion without style leakage ★ Adaptive HTML Editor Theme with OS Theme ⚠ IMPORTANT ⚠ - Competitors, make a fair competition!! - DO NOT RATE US NEGATIVELY for an issue encountered, please contact us at email darkziul@gmail.com, so that we can investigate and resolve the situation as soon as possible - We do NOT publish ANYTHING on the web, if your file has an image, you will need to publish it on the web - THIS EXTENSION DOES NOT REPLACE a mass mailer system ENJOYED? Give us a 5-star rating, a simple and painless action. Your positive review not only motivates us but also helps other users discover and enjoy the benefits our extension offers. Your feedback is fundamental to us and contributes to continuous improvement. OBSERVATIONS: - The strategy of injecting HTML template into webmail has its limitations, compared to a massive mailer system. For example: use of CSS Media Query, External Fonts, [...]

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%+1−0.06
6 months+10K+50.0%+1−0.06
1 year+10K+50.0%+6−0.01

Chrome Web Store search rankings

Where HTMaiL: Insert HTML into Gmail, Outlook and Yahoo Mail appears when people search the store, with the 30 day change
Search phrasePosition30 days
insert#3+2
html#3+6
yahoo#6+5
mail#6+5
gmail#54new
css editor#90+1

Version history

26 versions recorded
7.7.114 Oct 2026
7.7.013 Mar 2026
7.6.03 Apr 2025
7.5.213 Nov 2024
7.5.128 Oct 2024
7.5.024 May 2024
7.4.030 Dec 2023
7.3.24 Sep 2023

Details

Category
Tools
First seen
30 Jun 2020
Size
518 KB
Languages
en, pt-BR
Pricing
Free
Extension ID
omojcahabhafmagldeheegggbakefhlh

Permissions and risk

Low riskimpact 2, likelihood 1
Permissions
storagetabsmanagement

Alternatives to HTMaiL: Insert HTML into Gmail, Outlook and Yahoo Mail

Extensions that rank for the same store searches or share the Tools category, ordered by users