Subprocessors
Last updated: March 2, 2026
Shipletter uses the following third-party subprocessors to provide our services. Each subprocessor has been reviewed to ensure appropriate data protection practices are in place.
Shipletter, operated by Monster Endeavors, LLC, engages the subprocessors listed below to assist in providing our services to customers. We only share the minimum data necessary for each subprocessor to perform its function.
Current Subprocessors
Supabase, Inc.
United States- Purpose
- Database hosting, authentication, and data storage
- Data processed
- Account information, newsletter settings, generated newsletter drafts, authentication tokens
- Website
- https://supabase.com
Anthropic, PBC
United States- Purpose
- AI/LLM processing for newsletter generation and revision
- Data processed
- Slack message content from selected channels (processed transiently to generate newsletters), newsletter drafts, user editing instructions
- Website
- https://www.anthropic.com
Stripe, Inc.
United States- Purpose
- Payment processing and subscription management
- Data processed
- Billing information, payment method details, subscription status
- Website
- https://stripe.com
Render Services, Inc.
United States (Oregon)- Purpose
- Application hosting and compute infrastructure
- Data processed
- Application data in transit, server logs
- Website
- https://render.com
PostHog, Inc.
United States- Purpose
- Product analytics and error tracking
- Data processed
- Anonymized usage events, feature usage data, performance metrics
- Website
- https://posthog.com
Firecrawl (Mendable, Inc.)
United States- Purpose
- Web page crawling for link enrichment in newsletters
- Data processed
- URLs shared in Slack messages (public web pages only)
- Website
- https://firecrawl.dev
How We Use Subprocessors
When you use Shipletter, your data flows through our subprocessors as follows:
- Slack messages are fetched from the Slack API at your direction and sent to Anthropic's API for AI-powered newsletter generation. Message content is processed transiently and not stored by Anthropic after the request completes.
- Generated newsletter drafts, account settings, and session data are stored in our Supabase-hosted PostgreSQL database.
- Links shared in Slack may be crawled via Firecrawl to enrich newsletter content with article summaries and metadata. Only publicly accessible URLs are processed.
- Payment information is handled entirely by Stripe. We do not store credit card numbers or sensitive payment details on our servers.
- Usage analytics are collected via PostHog to improve the product. Analytics data is anonymized and does not include Slack message content or newsletter drafts.
Data Residency
All subprocessors used by Shipletter process and store data in the United States. Our application infrastructure is hosted in Render's Oregon (US West) region, and our database is hosted on Supabase's US infrastructure (AWS).
Changes to Subprocessors
We will update this page when we add or remove subprocessors. Material changes to our subprocessor list will be communicated to affected customers. If you have concerns about a new subprocessor, please contact us.
Contact Us
For questions about our subprocessors or data processing practices, contact us at:
Andrew Askins
support@shipletter.ai