Companies using Sympa by Open Source in 2025
As of 2025, 210 verified companies use Sympa – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is Sympa by Open Source?
Sympa by opensource.org is an open-source mailing list management system. It is used to automate and facilitate the management of email lists, including subscription, moderation, and archiving. It’s widely used to streamline operations in areas like IT, communication, and community engagement.
Last updated date
Number of Companies using
210
The majority are based in the
United States
Most common industry?
Business Services
Sympa’s sample user list in 2025
We have data on 210 companies that use Sympa. Our Sympa customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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Sympa users and customers by country
2.6K Companies
2.6K Companies
2.6K Companies
2.6K Companies
Where Sympa Shows Up Most
Sympa is used across a wide range of sectors:
Business Services
Education
Colleges & Universities
Manufacturing
Healthcare Services
From lean startups to global enterprises, Sympa’s footprint is wide, and that means opportunity.

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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is Sympa?
Sympa is an open-source mailing list management system used to automate and facilitate the management of email lists, including subscription, moderation, and archiving.
How many companies are using Sympa in 2025?
As of 2025, 210 verified companies are using Sympa.
What types of companies use Sympa?
Sympa is used across various industries, company sizes, and geographies.
What is the primary use of Sympa?
It’s widely used to streamline operations in areas like IT, communication, and community engagement through email list management.
What is the leading country using Sympa?
The United States is the country with the highest number of companies using Sympa.