# What does Fastmail use?

Fastmail (fastmail.help) shows public evidence of 8 tools, according to runsonwhat (last checked 2026-10-22).

- LinkedIn: https://www.linkedin.com/company/fastmail

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Font Awesome](https://www.runsonwhat.com/reverse/fontawesome) | Media & UI | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records, Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Red Sift OnDMARC](https://www.runsonwhat.com/reverse/redsift) | Security & Compliance | Email records |  |
| [Fastmail](https://www.runsonwhat.com/reverse/fastmail) | Workspace | Email records |  |
| [Workable](https://www.runsonwhat.com/reverse/workable) | People & HR | Website code |  |

## FAQ

### What tools does Fastmail use?

As of October 2026, runsonwhat has found 8 tools at Fastmail (fastmail.help) in public records. Edge & Hosting: Cloudflare. Application: Google Fonts and Font Awesome. Go-to-market: Zendesk. Company Ops: Red Sift OnDMARC, Fastmail and Workable. Last checked October 22, 2026.

### What email provider does Fastmail use?

Fastmail uses Fastmail for email and office software, according to runsonwhat (October 2026). runsonwhat found Fastmail through email records that authorize Fastmail. Fastmail is used by 1,163 companies runsonwhat tracks.

### What does Fastmail use for customer support?

Fastmail uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 42,361 companies runsonwhat tracks.

### What does Fastmail use for hiring and HR?

Fastmail uses Workable for hiring and HR, according to runsonwhat (October 2026). runsonwhat found Workable through Workable code on fastmail.help. Workable is used by 947 companies runsonwhat tracks.

### Does Fastmail use Google Fonts?

Yes. runsonwhat found Google Fonts at Fastmail through Google Fonts code on fastmail.help. Google Fonts is a Media & UI tool used by 817,737 companies runsonwhat tracks.

### Which companies have a tech stack similar to Fastmail's?

The companies with the stacks most like Fastmail's are Pobox is now part of Fastmail, Lawn Love, SuperMedic and XTM International, according to runsonwhat (October 2026). Each shares 4 to 4 tools with Fastmail, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Fastmail uses?

runsonwhat reads public records only. Of the 8 tools at Fastmail, 4 were found through code on fastmail.help, 2 through email records, 1 through DNS records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and fastmail.help about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/fastmail.help (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.