Write and insert custom HTML into Gmail emails easy and fast.
Users
21
−3 in 30 days
Rating
4.5 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#147K
#122K among extensions
Version
1.0.2
updated 3 Jan 2026
Users
monthly, 13 months
Latest, 15 Oct 2026:21 usersMove the mouse over the chart for any month
Ratings count
monthly, 13 months
Latest, 15 Oct 2026:2 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 HTML Mailer : Insert and Send HTML with Gmail
HTML Mailer: Easily Insert Custom HTML in Gmail Emails
Effortlessly compose and send brilliantly formatted emails in Gmail—using your own HTML!
Key Features:
Seamlessly edit Gmail emails with a convenient HTML button in the compose toolbar
Large, distraction-free editor with live preview side-by-side
Instantly see how your HTML will appear in your recipient’s inbox
One-click “Insert” places your code directly into the Gmail compose window
Fully secure—your email content never leaves your browser
Clean, intuitive design for users of all levels
Perfect for:
Marketers, designers, and anyone who wants beautiful, consistent, branded emails
Power users who need to include custom HTML tables, banners, or formatting
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
−3
−12.5%
0
0.00
6 months
+9
+75.0%
0
0.00
1 year
+21
–
+2
+4.50
Chrome Web Store search rankings
Where HTML Mailer : Insert and Send HTML with Gmail appears when people search the store, with the 30 day change