Sites using Thundermail
Open-source low-cost transactional email API and SDK that wraps Amazon SES for budget senders.
Get told when a new site ships with Thundermail.
Stackdar watches every launch we detect and sends you the ones using Thundermail, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work946 sites
935 found by StackScope, 11 via launch platforms
- StackScope Wider Web 865
- StackScope Discovery (Indie) 70
- Product Hunt 10
- PeerPush 1
Thundermail has been detected on 946 launches we've crawled, with 333 of those in September 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Vewaro — Watch, Listen & Share Together in Sync, today.
It's most commonly paired with nginx, ThunderCloud, and Google Fonts. By product type, the launches using it are most often E-commerce (16%), Health (15%), and Finance (10%). The 11 scored launches using Thundermail average a StackScope score of 7.0 out of 10, against 6.4 across all launches we score.
What kind of products ship with Thundermail
222 launches
Domain endings using Thundermail
945 sites
- .uk 50.37%
- .com 35.77%
- .org 3.07%
- .online 1.69%
- .net 1.59%
- .in 1.38%
- .app 0.95%
- .co 0.74%
- .site 0.74%
- .agency 0.32%
- .dev 0.32%
- .me 0.32%
- .ai 0.21%
- .io 0.21%
- .mx 0.21%
Country
425 of 946 sites, where we are semi-confident of the country.
-
United Kingdom
99.06%
-
France
0.24%
-
Pakistan
0.24%
-
Poland
0.24%
-
United States
0.24%
Share of new sites using Thundermail
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: on 10 September 2026 we improved our infrastructure so we can index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
How StackScope detects technologies
⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.
⋮ Jul 3, 2026: Email provider detection improved: providers identified from mail configuration are now caught on a site's first crawl. Earlier data may slightly undercount.
Transactional Email leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Resend
|
4.55% | 59.82% |
| #2 | ▲1 |
SendGrid
|
0.62% | 8.16% |
| #3 | ▼2 |
Amazon SES
|
0.55% | 7.23% |
| #4 | ▲1 |
MailChannels
|
0.53% | 6.94% |
| #5 | – |
Mail.Baby
|
0.46% | 6.01% |
| … | ||||
| #16 | ▲1 | Thundermail Current page | 0.02% | 0.30% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Transactional Email tool. All 163 in Transactional Email →
Often used with
| Tool | Sites |
|---|---|
nginx
|
836 |
| ThunderCloud | 719 |
Google Fonts
|
572 |
jQuery
|
481 |
WordPress
|
476 |
Tools most often detected on the same sites as Thundermail.
Recent launches we can show
81 of the 946 sites using Thundermail are product launches we list individually. The other 865 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
Angstep
Developer Tools
Toolbox Studio v1.4.0 - Universal Multi-Format Converter
Toolbox Studio v1.4.0 - Universal Multi-Format Converter
Birchmont Golf | Websites and Bespoke Internal Management Systems for Golf Clubs
hospio. Less paper. Less chasing. More house.
Productivity
Dweller — Rental management for landlords and tenants
Productivity
EcomFees UK — Ecommerce Fee & Profit Calculators
E-commerce
CANA | Landlord Property, Tenancy & Compliance
FindYourBenefit Business — Find the money you're owed
Finance
FindYourBenefit — Find the money you're owed
Finance
WooCommerce Visual Product Manager – Visual Product, Category, Order & Customer Management
E-commerce
Showing the most recent 12 of 81.
The StackScope API serves all 946 sites using Thundermail, filterable and exportable, from £15 a month.