What else does FastComments use?

Akamai, Brevo, DeepInfra, Hetzner and OVH, among 14 vendors we hold evidence for.

Which other companies use Mailgun?

15Five, 365agents, 3motionAI, 42Gears and 50hire, among 489 companies with public evidence.

Yes. We hold strong evidence for this. Evidence: Subprocessor list, Privacy policy.

Yes

We hold strong evidence for this.

The company names it in its own subprocessor list, a statement that this vendor handles its customers' data.
The company's privacy policy names it as a processor, controller or partner.

Subprocessor listNamed as Mailgun Technologies, Inc.Processes data for the company11 Nov 2026Source

Privacy policyNamed as Mailgun Technologies, Inc.Processes data for the company11 Nov 2026Source

FastComments provides live commenting, streaming chat, and live polls for any page or app. It serves sites and apps that want to add these features.

Summarized from its homepage on 4 Nov 2026.

FastComments has evidence for 14 vendors. The strongest:

See FastComments's full stack with a source for every vendor, and ask the same question about any company from the API, Claude or your browser.