We scan the entire internet every week, so detections stay current.
4B+
Observations captured every day, across DNS records, public service scans and websites.
75,317
Technologies tracked, each matched to the companies running them and who to call.
Companies using FirstClass Mail Server
Showing 5 of 22 companies
Execulink Telecom Inc
execulink.ca · Internet services and web portals · 51–250 employees
Last seen 12 Sep 2026
The most recent date Firmable detected FirstClass Mail Server at this company.
Decision makers · 26 on fileSenior people on file at this company. Firmable holds their names, emails and mobiles.
Vice President of TechnologyMobileEmail
Infrastructure Planning SupervisorMobileEmail
Unlock names, emails and mobiles in the trial.
Signals Recent events at this company, such as a leadership change, funding or a new office.
Execulink Telecom highlights its collaboration with Ontario-based technology company Suprvisr AI to explore secure workplace AI solutions. · 14 Sep 2026
A breakdown of the 22 companies running FirstClass Mail Server.
Top industries
Education and training8
Information technology and services7
Media and telecommunications2
Agriculture, forestry and fishing1
Art, sports and recreation1
Health and wellness1
No industry recorded: 2
Company size
1–104 (27%)
11–503 (20%)
51–2504 (27%)
1,001–5,0002 (13%)
10,001+2 (13%)
Share of companies with a recorded size, by employees.
No size recorded: 7
Versions detected
7 versions across the confirmed companies. Counts are distinct companies seen running that version.
16.26
16.15
9.13
12.12
11.01
11.11
8.31
One dataset. Four ways to sell.
Match the deepest technology intelligence against the most comprehensive data on companies and people – such as who is growing, raised capital or changed role – for pinpoint precision on GTM campaigns.
Competitor displacement
Find the accounts running a competitor today and go after them with the right argument.
Complementary tools
Target companies whose stack sits alongside yours and integrates without a fight.
Service partners
Identify implementers and agencies already working in the technologies you support.
Market insights
Map your total addressable market and track aggregated trends such as AI maturity.
Frequently asked questions
About the FirstClass Mail Server data on this page.
How many companies use FirstClass Mail Server?
Firmable holds confirmed FirstClass Mail Server detections for 22 distinct companies, 22 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use FirstClass Mail Server?
Execulink Telecom Inc, UNIDATA and Xfinity Communities are among the most prominent in the current set.
What industries use FirstClass Mail Server?
Education and training, information technology and services and media and telecommunications lead the set, across 8 industries in total.
What size companies use FirstClass Mail Server?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are FirstClass Mail Server users based?
The United States, Japan, Canada and Australia account for most detections, across 13 countries.
How current is this data?
22 companies were confirmed in the last 90 days. Last detection 14 October 2026.
