Sites using Customer.io
Customer.io marketing automation and transactional email.
Found via: Product Hunt 61 · Hacker News 8 · PeerPush 1 · StackScope Discovery (Indie) 1 · StackScope Wider Web 16
Figures on this page reflect sites found via StackScope Wider Web only. The "Found via" counts above always show every source. Reset
Customer.io has been detected on 16 launches we've crawled, with 16 of those in July 2026 (0.0% of the month's launches so far). Most recent detection was 6 days ago.
It's most commonly paired with Gist, Google Tag Manager, and Google Analytics.
Share of new launches using Customer.io
Each dot is one launch day. Line is the 7-day rolling average.
Email Marketing leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 |
Brevo
|
0.71% | 43.34% | |
| #2 |
Klaviyo
|
0.28% | 16.86% | |
| #3 |
HubSpot
|
0.19% | 11.86% | |
| #4 |
Mailchimp
|
0.15% | 9.08% | |
| #5 |
MailerLite
|
0.08% | 4.77% | |
| … | ||||
| #9 |
Customer.io
Current page
|
0.02% | 1.23% | |
Percentages show adoption among launches found via StackScope Wider Web: the share of all such launches, and of those using any Email Marketing tool. All 50 in Email Marketing →
Often used with
| Tool | Launches |
|---|---|
Gist
|
12 |
Google Tag Manager
|
11 |
Google Analytics
|
11 |
nginx
|
9 |
Angular
|
7 |
Tools most often detected on the same launches as Customer.io.
16 sites across the wider web use Customer.io
StackScope Wider Web counts newly launched sites that are not indie product launches. They shape the aggregate figures on this page but are never listed individually. How StackScope Discovery works · Back to launches