Custos: Write Messages Faster

by Custos Tech Inc. · withcustos.com · Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 17 Oct 2026

Instant message drafts in your own voice. Write like yourself, but faster.

Users

194

−19 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#65K

#54K among extensions

Version

4.16.7

updated 13 Nov 2025

Users

monthly, 16 months

Latest, 17 Oct 2026: 194 usersMove the mouse over the chart for any month

Ratings count

monthly, 16 months

Latest, 17 Oct 2026: 15 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 Custos: Write Messages Faster

Custos creates message drafts in your style and with full context, so you can respond and follow-up fast.

Growth

Window	Users	Change	Ratings
7 days	−3	−1.5%	0
30 days	−19	−8.9%	0
6 months	−103	−34.7%	−1
1 year	−328	−62.8%	−4

Version history

36 versions recorded

4.16.731 Oct 2025

4.16.628 Oct 2025

4.16.520 Oct 2025

4.16.416 Oct 2025

4.16.315 Oct 2025

4.16.214 Oct 2025

4.16.19 Oct 2025

4.15.27 Oct 2025

Details

Category: Tools
First seen: 3 Jul 2025
Size: 1.7 MB
Languages: en
Pricing: Free
Privacy policy: withcustos.com
Support: withcustos.com
Extension ID: bidipbdhamfppdhdfpdabnnfodkmhfaa

Permissions and risk

Elevated riskimpact 3, likelihood 3

Permissions

storagescriptingidentitywebRequest

Site access

https://custos-backend-production-d7ids.ondigitalocean.app/*https://custos-ai-production-atb6d.ondigitalocean.app/**://mail.google.com/**://mail.google.com/*