Fly.io Subprocessors List (September 2026): Changes and History
Fly.io names 33 subprocessors on its published list. Read from the vendor's own page and re-checked daily.
Last checked September 26, 2026
Official source ↗
Fly.io subprocessors (September 2026)
| # | Subprocessor | Purpose | Location |
|---|---|---|---|
| 1 | Anthropic | AI-assisted log analysis, support responses, and signup classification | United States |
| 2 | AWS | Account management, backup storage, engineering support | United States |
| 3 | CacheNetworks | Hosting provider | United States |
| 4 | Customer.io | Newsletters and transactional email | United States |
| 5 | DataPacket | Hosting provider | United Kingdom |
| 6 | Depot | Customer software builds | United States |
| 7 | Discord | Customer support communication | United States |
| 8 | Discourse | Customer support communication | United States |
| 9 | Dropbox Sign | Agreement signing (DPA, BAA, NDA) | United States |
| 10 | Productivity suite and cloud infrastructure | United States | |
| 11 | Help Scout | Customer support communication | United States |
| 12 | Honeycomb | Tracing and observability | United States |
| 13 | HubSpot | Customer relationship management | United States |
| 14 | incident.io | Incident response and on-call management | United Kingdom |
| 15 | IPinfo | Signup IP geolocation and risk scoring | United States |
| 16 | Latitude | Hosting provider | United States |
| 17 | LaunchDarkly | Feature rollout management | United States |
| 18 | Mailgun | Transactional email | United States |
| 19 | Metronome | Billing | United States |
| 20 | NetActuate | Hosting provider | United States |
| 21 | OpenAI | Incident summary generation | United States |
| 22 | PeopleDataLabs | Signup risk scoring | United States |
| 23 | Plain | Customer support communication | United Kingdom |
| 24 | PostHog | Product analytics | Germany |
| 25 | RudderStack | Product analytics | United States |
| 26 | Sentry | Error reporting | United States |
| 27 | Slab | Knowledge management | United States |
| 28 | Slack | Customer support communication | United States |
| 29 | Snowflake | Customer relationship management | United States |
| 30 | Stripe | Payment processing, fraud and abuse prevention | United States |
| 31 | Tigris | Object storage for Sprites | United States |
| 32 | Timescale | Time-series metrics storage | United States |
| 33 | Vultr | Hosting provider | United States |
Get an email when Fly.io changes its subprocessors
ClauseTrail re-checks this list every day and tells you exactly who was added or removed — including when a vendor starts sending data to an AI provider. The first vendors are free.
Change history
Tracking since September 26, 2026. No change has been published since; additions, removals and document changes will appear here as they're published.
Fly.io subprocessors FAQ
- How many subprocessors does Fly.io use?
- Fly.io lists 33 subprocessors on its published list, including Anthropic, AWS, CacheNetworks, Customer.io, and DataPacket and 28 more.
- Where does Fly.io process customer data?
- The subprocessors named by Fly.io are located in United States, United Kingdom, and Germany, as stated on its list.
- When was Fly.io's subprocessor list last checked?
- ClauseTrail last checked Fly.io's subprocessor list on September 26, 2026. Lists are re-checked daily.
- How do I find out when Fly.io adds or removes a subprocessor?
- ClauseTrail monitors Fly.io's subprocessor list, DPA, privacy policy and terms and emails you the exact change — who was added or removed and what the page said before and after. The first vendors are free.