Sites using CoreSES

4 sites via All sites #1059 of 3227 in Email Hosting First seen: Sep 3, 2026 Last seen: Sep 4, 2026

Found via: StackScope Discovery (Indie) 1 · StackScope Wider Web 3

Last 7 days 0.0% +0.0pp
Most used with Cloudflare DNS, Cloudflare, HTTP/3

CoreSES has been detected on 4 launches since first appearing in September 2026. Most recent detection: Waistline — Free Open-Source Calorie Counter · No Cloud, today.

It's most commonly paired with Cloudflare DNS, Cloudflare, and HTTP/3.

Share of new sites using CoreSES

Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
September so far
2 of 280,537 sites
4
sites all time
since Sep 2026
CoreSES daily detection trend 5% 2% 0% Sep Aug 27 · 0 / 83634 = 0.0% Aug 28 · 0 / 83466 = 0.0% Aug 29 · 0 / 84385 = 0.0% Aug 30 · 0 / 92696 = 0.0% Aug 31 · 0 / 90352 = 0.0% Sep 1 · 0 / 91592 = 0.0% Sep 2 · 0 / 97305 = 0.0% Sep 3 · 2 / 91640 = 0.0%
Aug 27, 2026 8 days Sep 3, 2026

How StackScope detects technologies

Email Hosting leaders

Tool % of launches % of category
#1 ▼1 Google Workspace 6.57% 23.00%
#2 ▲1 Hostinger Email 6.45% 22.59%
#3 ▼1 Zoho Mail 1.85% 6.48%
#4 ▲1 IONOS Email 1.74% 6.08%
#5 Microsoft 365 1.05% 3.69%
#1059 CoreSES Current page <0.01% <0.01%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Email Hosting tool. All 3227 in Email Hosting →

Often used with

Tool Sites
Cloudflare DNS 4
Cloudflare 4
HTTP/3 4
Vite 2
React Router 2

Tools most often detected on the same sites as CoreSES.

Recent launches we can show

1 of the 4 sites using CoreSES are product launches we list individually. The other 3 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

The StackScope API serves all 4 sites using CoreSES, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.