e21's tech stack
What does e21 use?
e21 (e21.fi) uses at least 14 tools we can see from public records, including Google Cloud for hosting, Microsoft 365 for email and documents, Google Tag Manager for analytics and Mailchimp for marketing. Last checked .
- Based in
- Finland
- Company page
- Tools found
- 14
- Categories
- 8
- Layers
- 5 of 5
- Last checked
- Nov 2026
e21's stack, layer by layer
Of 14 tools, 7 came from website code, 3 from email records, 2 from DNS verification records and 2 from other records. Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
2 tools, where the bytes are served from
Hosting & Cloud
Application
4 tools, what the product is built with
Frontend
Data & Observability
1 tool, what they measure and store
Analytics
Go-to-market
4 tools, how they find and keep customers
Ads & Pixels
Company Ops
3 tools, what the team runs on day to day
Email Delivery
e21 tech stack FAQ
What tools does e21 use?
As of November 2026, runsonwhat has found 14 tools at e21 (e21.fi) in public records. Edge & Hosting: Google Cloud and Microsoft Azure. Application: jQuery, Google Fonts and Font Awesome. Data & Observability: Google Tag Manager. Go-to-market: Meta Pixel, LinkedIn Insight Tag and Mailchimp. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked November 3, 2026.
What cloud does e21 run on?
e21 uses Google Cloud for hosting and cloud infrastructure, alongside Microsoft Azure, according to runsonwhat (November 2026). runsonwhat found Google Cloud through a subdomain that points at Google Cloud. Google Cloud is used by 77,557 companies runsonwhat tracks.
What email provider does e21 use?
e21 uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 729,825 companies runsonwhat tracks.
What analytics tools does e21 use?
e21 uses Google Tag Manager for analytics, according to runsonwhat (November 2026). runsonwhat found Google Tag Manager through Google Tag Manager code on e21.fi. Google Tag Manager is used by 515,708 companies runsonwhat tracks.
What marketing software does e21 use?
e21 uses Mailchimp for marketing, according to runsonwhat (November 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 118,558 companies runsonwhat tracks.
Does e21 use jQuery?
Yes. runsonwhat found jQuery at e21 through jQuery code on e21.fi. jQuery is a Frontend tool used by 927,364 companies runsonwhat tracks.
How does runsonwhat know what e21 uses?
runsonwhat reads public records only. Of the 14 tools at e21, 7 were found through code on e21.fi, 3 through email records, 2 through DNS records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and e21.fi about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.