SubProcessorsStacksi Subprocessors
Security
We help make security an asset, not a pain by enabling leading software companies to automate security questionnaires.
| Name | Category | Purpose | Country | Data Processed |
|---|---|---|---|---|
| Amazon Web Services | Cloud Infrastructure | Network Infrastructure |  United States |
- |
| Google Cloud | Cloud Infrastructure | Collaboration and Data Storage | United States |
- |
| Slack | Communications | Collaboration Tools | United States |
- |
| Calendly | Scheduling | Support & Scheduling | United States |
- |
| Customer.io | Email Delivery | United States |
- | |
| Segment | Analytics | Application Event Management | United States |
- |
| Sentry | Monitoring | Application Logging | United States |
- |
| Fullstory | Analytics | Application Logging | United States |
- |
| Papertrail | Monitoring | Application Logging | United States |
- |
| Mailgun | Email Delivery | United States |
- | |
| PostHog | Analytics | Application Logging | United States |
- |
| Webflow | Web Hosting | Web Hosting | United States |
- |
February 9, 2026
+12 added
- + Amazon Web Services (Cloud Infrastructure)
- + Google Cloud (Cloud Infrastructure)
- + Slack (Communications)
- + Calendly (Scheduling)
- + Customer.io (Email)
- + Segment (Analytics)
- + Sentry (Monitoring)
- + Fullstory (Analytics)
- + Papertrail (Monitoring)
- + Mailgun (Email)
- + PostHog (Analytics)
- + Webflow (Web Hosting)
- Page updated: unknown → 2021-11-24
Summary
12
Total Subprocessors
1
Countries
7
Categories
100%
in United States
Subprocessors by Country
Subprocessors by Category
Biggest overlap with
Other companies using the most of the same subprocessors
Common in your industry
Top subprocessors used by other Security companies