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Technologies / Amazon Web Services / Fastmail

Companies using Amazon Web Services and Fastmail

6 companies in our data have public evidence for both Amazon Web Services and Fastmail, and 5 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

6companies use both
under 1%of Amazon Web Services users
40%of Fastmail users
5name both as subprocessors

Companies using one are 1.7 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyAmazon Web ServicesFastmail
AccountsPortalaccountsportal.comAccountsPortal provides online accounting software for managing invoicing, books, and accounts.Finance and accounting software
Healthchecks.ioHealthchecks.io monitors cron jobs and scheduled tasks by alerting users when expected pings do not arrive on time.Developer tools
RenderFormrenderform.ioRenderForm is a graphics editor for designing templates that automate repetitive image, PDF, or video creation.Design and creativeDeveloper tools
SimpleLocalizesimplelocalize.ioSimpleLocalize provides a web-based translation editor and platform for managing translations and automating localization workflows for software projects.Developer tools
Fathom Analyticsusefathom.comFathom provides website analytics software that shows where visitors come from, which pages they read, and what converts without using cookies.Data and analytics
ipapi.co

The two technologies

Amazon Web Services

by Amazon · Cloud and infrastructure

Amazon Web Services is a cloud provider offering a broad set of on-demand computing, storage, database, analytics, and AI services. It is used to build, deploy, and scale applications and workloads in the cloud.

Summarized from aws.amazon.com on 8 Nov 2026.

under 1% of the 5,473 companies we see using Amazon Web Services also show the other.

All 5,473 companies using Amazon Web Services4,296 name it as a subprocessorMore in Cloud and infrastructure

Fastmail

Email and communications

Fastmail is a paid email hosting service offering email, calendar, and contacts, with options for private email addresses and offline access. It is used by individuals and businesses to send, receive, organize, and manage email, calendars, and contacts across devices.

Summarized from fastmail.com on 8 Nov 2026.

40% of the 15 companies we see using Fastmail also show the other.

All 15 companies using Fastmail12 name it as a subprocessorMore in Email and communications

Other pairs

Companies with their own evidence for both.

More with Amazon Web Services

Cloudflare5,265companiesGoogle Workspace3,964companiesGoogle Tag Manager2,580companiesGoogle Analytics2,169companiesGoogle2,043companiesStripe2,028companies

More with Fastmail

Cloudflare15companiesStripe9companiesAnthropic6companiesHetzner6companiesGoogle5companiesPaddle5companies

Questions

How many companies use both Amazon Web Services and Fastmail?

6 companies in StrataDB's data have public evidence for both, and 5 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Amazon Web Services and Fastmail?

AccountsPortal, Healthchecks.io, RenderForm, SimpleLocalize and Fathom Analytics, and 1 more company. Each one links to the evidence behind it.

How does StrataDB know a company uses Amazon Web Services and Fastmail?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Amazon Web Services and Fastmail

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call