Labs / Time machine / Fastmail
Fastmail
The subprocessor list as we last read it, on Nov 11, 2026.
Dates are when we read the list (UTC), not when Fastmail changed it. Between two readings we don't know what it said.
tall: list changed · medium: document changed · short: read, no change · x: check failed · dotted: change dates only. Tap a tick or use the date box.
We record change dates, not every check, before Oct 11, 2026.
We have published no changes to this vendor's list; our first reading was Sep 21, 2026.
Read Nov 11, 2026 · 35 companies named as a subprocessor · stored document
| Name | Purpose | First read |
|---|---|---|
| Abusix | Antispam/antifraud/antiabuse management | |
| Anthropic PBC AI | Business operations and support services | |
| Avalara AvaTax | Business operations | |
| CentralNic Reseller (RRPproxy) | Domain registration and management | |
| Cloudflare | Content distribution, security, abuse prevention and DNS services | |
| DeepL | Translation services, primarily for support tickets and non-English spam and phishing content review | |
| DNSWL | Antispam/antifraud/antiabuse management | |
| DropBox | Support services and Business operations | |
| eFax (j2connect) | Support services and Business operations | |
| eHawk | Antispam/antifraud/antiabuse management | |
| GitHub | Hosting of code as an open source tool | |
| Grammarly | Writing assistance, primarily for support tickets | |
| hCaptcha | Antispam/antifraud/antiabuse management | |
| Linear | Project management and Business operations | |
| Mailchimp | Email marketing and automation | |
| Microsoft | Cloud-based and on-premises office productivity tools | |
| Notion | Support services and Business operations | |
| Paddle | Payment processing | |
| PagerDuty | Support services and Incident management | |
| Partnerstack | Partner and referral management | |
| Paypal | Payment processing | |
| Pin | Payment processing | |
| Posthog | Analytics in order to improve user experience. | |
| Pythia | Support services | |
| Redsift | Antispam/antifraud/antiabuse management | |
| Sentry | Application logging | |
| Slack | Support services and Business operations | |
| Spamhaus | Antispam/antifraud/antiabuse management | |
| Stripe | Payment processing | |
| SurveyMonkey | Support services, Customer feedback and Business operations | |
| Twilio | Multi-factor authentication | |
| Vade (Hornet Security) | Antispam/antifraud/antiabuse management | |
| Validity | Antispam/antifraud/antiabuse management | |
| Zendesk | Support services | |
| Zoom | Video conferencing |
Affiliates it names
| Name | Purpose | First read |
|---|---|---|
| Fastmail US LLC | Business operations |
Built from the changes we published; changes we recorded without an alert (parser fixes, entries approved after review) don't appear. Where we later improved how we read a list, an earlier list may look different from the vendor's page at the time.
Gaps in our readings
No gaps since Oct 11, 2026.
All readings (33)
History starts Sep 21, 2026. Dates are UTC. Data CC BY 4.0. Shown as stored when this page was built.