# Mailtrap Mailtrap declares [12 subprocessors](https://thirdpartyindex.com/vendors/mailtrap-io#subprocessors) in [its subprocessor list](https://mailtrap.io/sub-processors/), which we last checked on 2026-11-11 ([evidence](https://thirdpartyindex.com/evidence/231701)). They include [Amazon Web Services](https://thirdpartyindex.com/vendors/amazon-web-services), [Google Cloud](https://thirdpartyindex.com/vendors/google-cloud) and [OpenAI](https://thirdpartyindex.com/vendors/openai). No published changes since we first read it on 2026-11-07. [2 tracked vendors](https://thirdpartyindex.com/vendors/mailtrap-io#used-by) name Mailtrap as a subprocessor, including [Digistorm AU](https://thirdpartyindex.com/vendors/digistorm-au) and [Leadjourney](https://thirdpartyindex.com/vendors/leadjourney). Mailtrap (mailtrap.io): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index. - Page: https://thirdpartyindex.com/vendors/mailtrap-io - Documents last verified: 2026-11-11 - Transparency rating: 71/100 (how much it publishes, not how secure it is): Subprocessor list 30/30; Processing locations 8/8; Purposes 7/7; Data processing addendum 12/12; Trust center 0/8 (not found); Privacy policy 6/6; security.txt 0/6 (not found); Security page 0/5 (not found); Status page 0/5 (not found); Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8 - Supply chain: relies on 12 tracked vendors directly, 127 within two hops, 403 within three; 2 tracked vendors rely on it directly, 3 within two hops, 3 within three - Cite as: Mailtrap, Third Party Index, https://thirdpartyindex.com/vendors/mailtrap-io (data CC BY 4.0) ## Documents | Document | URL | Last verified | Last changed | |---|---|---|---| | Subprocessor list | https://mailtrap.io/sub-processors/ | 2026-11-11 | 2026-11-07 | | Data processing addendum | https://mailtrap.io/dpa/ | 2026-11-11 | 2026-11-07 | | Privacy policy | https://mailtrap.io/privacy/ | 2026-11-11 | 2026-11-07 | | Terms | https://mailtrap.io/terms/ | 2026-11-11 | 2026-11-07 | ## Subprocessors (12) As its own list states them. | Subprocessor | Purpose | Location | Listed since | |---|---|---|---| | [Amazon Web Services, Inc.](https://thirdpartyindex.com/vendors/amazon-web-services.md) | Infrastructure | The United States | 2026-11-07 | | [E-HAWK LLC](https://thirdpartyindex.com/vendors/e-hawk.md) | Risk assessment | The United States | 2026-11-07 | | [GitBook Inc.](https://thirdpartyindex.com/vendors/gitbook.md) | Infrastructure – powers the in-app AI Assistant | The United States | 2026-11-07 | | [Google Inc.](https://thirdpartyindex.com/vendors/google-cloud.md) | Infrastructure | The United States | 2026-11-07 | | [Mailgun Technologies, Inc.](https://thirdpartyindex.com/vendors/mailgun.md) | Infrastructure – email rendering previews | The United States | 2026-11-07 | | [Microsoft, Inc. (Clarity)](https://thirdpartyindex.com/vendors/microsoft.md) | Product Analytics and Session Replay | The United States | 2026-11-07 | | [OpenAI OpCo, LLC](https://thirdpartyindex.com/vendors/openai.md) (AI model provider: OpenAI) | AI-assisted email content analysis for abuse prevention and security | The United States | 2026-11-07 | | [PayPal, Inc. (Braintree)](https://thirdpartyindex.com/vendors/paypal-us.md) | Payment processing | The United States | 2026-11-07 | | [Salesforce.com, Inc. (Heroku)](https://thirdpartyindex.com/vendors/salesforce.md) | Infrastructure | The United States | 2026-11-07 | | [Slack Technologies Inc](https://thirdpartyindex.com/vendors/slack.md) | Communication | The United States | 2026-11-07 | | [Stripe, Inc.](https://thirdpartyindex.com/vendors/stripe.md) | Payment processing | The United States | 2026-11-07 | | [Unlayer, Inc.](https://thirdpartyindex.com/vendors/unlayer.md) | Infrastructure | The United States | 2026-11-07 | Read from ([evidence](https://thirdpartyindex.com/evidence/231701)). CSV: https://thirdpartyindex.com/vendors/mailtrap-io/subprocessors.csv AI model providers (or a cloud provider's AI model service) among these entries: 1. All vendors that list one: https://thirdpartyindex.com/ai ## Web Technologies Mailtrap's homepage made 57 requests to 4 domains, and 1 service controlled by another company. Loaded on 2026-11-07 by a browser that accepted nothing; other visits may load more or less. What a page loads is not a list of who receives customer data. 1 third party by category: CDN 1 (Google Cloud). Each company that appears controlled by another organization is counted once, under the main category of the technologies detected from it on this homepage or, when none was, the category recorded from the company's own page (marked reviewed) or else the one it is usually detected as on other published homepages (marked as such); unclassified: none of these. ### Third parties (1) - Google Cloud: 7 requests to gstatic.com, ajax.googleapis.com, fonts.googleapis.com; Google Font API, Google Hosted Libraries (its subprocessor list names it too) ### First party (1) - Mailtrap: 50 requests to mailtrap.io; Cloudflare, HSTS, HTTP/3, Open Graph, PWA, Priority Hints ## Subprocessor of (2) Tracked vendors whose own subprocessor lists name it, and what they say they use it for. - [Digistorm AU](https://thirdpartyindex.com/vendors/digistorm-au.md): Email testing; Internal Business Operations - Applications, Services, and Support - [Leadjourney](https://thirdpartyindex.com/vendors/leadjourney.md): Transactional email delivery ## Incidents reported by Mailtrap's subprocessors Incidents reported in the last 30 days on their own status pages by 4 vendors Mailtrap lists as subprocessors. A subprocessor list names a company, not the service an incident touched. - 2026-11-11: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Unable to start new Workspace Agent runs (critical) - 2026-11-11: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated errors affecting logins, sign-ups, and ChatGPT features (minor) - 2026-11-10: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Incorrect cost data in Costs API exports (no impact stated) - 2026-11-09: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated Errors On API (minor) - 2026-11-09: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated ChatGPT Conversation Errors (minor) - 2026-11-08: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated errors with image generation (minor) - 2026-11-06: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated error rates with some U.S. business Mastercards (no impact stated) - 2026-11-05: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported ChatGPT Work and Dots Errors (minor) - 2026-11-04: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated error rates across paid ChatGPT plans (minor) - 2026-11-04: [GitBook](https://thirdpartyindex.com/vendors/gitbook#status), which Mailtrap lists as a subprocessor, reported Git Sync affected by GitHub disruption (major) - 2026-11-03: [GitBook](https://thirdpartyindex.com/vendors/gitbook#status), which Mailtrap lists as a subprocessor, reported Security incident impacting published sites and GitBook app (critical) - 2026-11-03: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported File upload errors in ChatGPT (minor) - 2026-11-02: [GitBook](https://thirdpartyindex.com/vendors/gitbook#status), which Mailtrap lists as a subprocessor, reported GitBook services unavailable (critical) - 2026-11-02: [GitBook](https://thirdpartyindex.com/vendors/gitbook#status), which Mailtrap lists as a subprocessor, reported Git Sync causing missing page content (major) - 2026-11-01: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Instant Payouts failures (no impact stated) - 2026-10-30: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated errors with search in Dots, ChatGPT Work, and certain ChatGPT thinking experiences (minor) - 2026-10-30: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated errors for GPT Image 2 API image edits (minor) - 2026-10-28: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Issuing errors from 17:13 - 20:41 UTC (minor) - 2026-10-28: [GitBook](https://thirdpartyindex.com/vendors/gitbook#status), which Mailtrap lists as a subprocessor, reported API operations are slower than usual (minor) - 2026-10-28: [Mailgun](https://thirdpartyindex.com/vendors/mailgun#status), which Mailtrap lists as a subprocessor, reported Route delays in EU Region (minor) - 2026-10-27: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported 6.1 Sol Degraded Model Performance (minor) - 2026-10-27: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated error rates for most hosted Code Reviews and Security Reviews on private GitHub repositories (no impact stated) - 2026-10-26: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated error rates for Ads POST requests (minor) - 2026-10-24: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Blik errors (no impact stated) - 2026-10-23: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Degraded experience with ChatGPT app connections using CIMD (minor) - 2026-10-23: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Help Center Chat Support Degraded (no impact stated) - 2026-10-23: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Delays in customer support responses (no impact stated) - 2026-10-22: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Bancontact errors (no impact stated) - 2026-10-22: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported New Ad Accounts failing to provision admins (minor) - 2026-10-22: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Degraded Performance of Dots on Enterprise (minor) - 2026-10-22: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Bancontact errors (no impact stated) - 2026-10-22: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated ChatGPT conversation and Responses API errors (minor) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Authentication errors for some users (major) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated error rates for gpt-5.6-luna API requests (minor) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Elevated FedRAMP API error rates for Astra and Sol (minor) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Degraded performance in ChatGPT, Codex, and APIs (minor) - 2026-10-20: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Spike in cancellations and expired errors with PayByBank payments (no impact stated) - 2026-10-20: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Revolut Pay errors (no impact stated) - 2026-10-19: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported File Download errors (minor) - 2026-10-15: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated declines on Mastercard (no impact stated) - 2026-10-15: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated declines on Visa (no impact stated) - 2026-10-15: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Widespread feature degradation (major) - 2026-10-15: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailtrap lists as a subprocessor, reported Elevated Amazon Pay errors (no impact stated) - 2026-10-14: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Delayed Costs data in the Compliance API (minor) - 2026-10-14: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Limited availability on gpt-image-2.5-flare and gpt-image-2.5-sunburst (minor) - 2026-10-14: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Degraded performance in Codex and ChatGPT Work (minor) - 2026-10-13: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailtrap lists as a subprocessor, reported Degraded performance in GPT-6.1 Sol Codex and Work mode (minor) The subprocessor list as we read it on any date: https://thirdpartyindex.com/labs/time-machine/mailtrap-io --- Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api