24 websites in the live index use Sympa as of October 2026. Download the full list of Sympa websites with website, company, country and language.
Sympa is an open-source mailing list management (MLM) software.
As of October 16, 2026, TechLeads detects Sympa on 24 websites: 0.00% of Webmail detections, the 6th most-used of 7 Webmail technologies we track.
Quoting these numbers? Credit TechLeads with a link to this page.
Citation
TechLeads. "Companies Using Sympa." Data as of October 16, 2026. https://techleads.fyi/technology/sympaHTML link
<a href="https://techleads.fyi/technology/sympa">Companies using Sympa (TechLeads data)</a>Sample results for Sympa
| Rank | Icon | Website | Title | Description | Company | Country | Language |
|---|---|---|---|---|---|---|---|
| #268,057 | lists.riseup.net | - | Lists | - | - | ||
| #1,378,504 | Duke University Mailing Lists - home | - | Lists | US | en-US | ||
| #3,561,249 | - | - | - | - | - | ||
| #5,000,000 | Sympa - mailing list system | - | - | - | - | ||
| #5,000,000 | Serviço de listas de e-mail da UFBA - home | - | - | - | - | ||
| #5,000,000 | - | - | - | - | - | ||
| #8,900,419 | University of Oxford Mailing Lists (@maillist.ox.ac.uk) - home | - | - | - | - | ||
| #8,946,827 | UT Sympa - home | - | - | - | - | ||
| #10,000,000 | Mailing lists service - home | - | - | - | - | ||
| #10,000,000 | 横浜市 - 横浜市メーリングリストシステム に移動しています… | - | - | - | - | ||
| #10,000,000 | - | - | - | - | - | ||
| #10,000,000 | - | - | - | - | - | ||
| #50,000,000 | lists.utdallas.edu | 526: Invalid SSL certificate | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - | ||
| #50,000,000 | - | - | - | - | - |
Complete Sympa website dataset in CSV. One-time purchase.
Secure checkout · 7-day download accessThe most-used Webmail technologies in the TechLeads index, by number of websites. Sympa accounts for 0.00% of Webmail detections (24 websites).
| Technology | Websites | Share of Webmail |
|---|---|---|
| Apple iCloud Mail | 855,093 | 99.4% |
| RoundCube | 3,028 | 0.35% |
| Outlook Web App | 1,516 | 0.18% |
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TechLeads scans public websites and identifies Sympa from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily; this page uses data from October 16, 2026. Counts only include websites we have scanned, so they can differ from other providers.
Distribution of websites using Sympa across countries in the TechLeads database.
| Country | Sites |
|---|---|
| United States(US) | 1 |
Technologies most frequently detected on the same websites as Sympa.
Sympa is an open-source mailing list management (MLM) software.
Our comprehensive database contains 24 websites using Sympa, making it the most complete Sympa sites list available. This Sympa customer websites directory helps businesses detect websites using Sympa and identify potential leads.
The largest concentrations of Sympa websites are in US, based on our indexed country data.
Websites using Sympa commonly also use Perl, Apache HTTP Server, ZURB Foundation, jqPlot, HSTS — reflecting typical Sympa technology stacks.
Our Sympa technology detection system scans millions of websites to identify those powered by Sympa. This list of sites with Sympa includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with Sympa or exploring Sympa adoption trends, our database provides comprehensive insights.
Each entry in our Sympa sites list includes valuable data points: domain name, global ranking, company information, contact details, social media links. This makes it easy to detect websites using Sympa and reach out to potential customers or partners.
Get instant access to the full list of sites with Sympa in CSV format. Our dataset includes all 24 Sympa customer websites with complete contact information, perfect for lead generation, market research, and competitive analysis. The data is regularly updated to ensure accuracy and includes the latest Sympa powered websites.