# Mailercloud Mailercloud declares [11 subprocessors](https://thirdpartyindex.com/vendors/mailercloud#subprocessors), plus 1 of its own affiliates, in [its subprocessor list](https://www.mailercloud.com/legal/subprocessors/), which we last checked on 2026-11-12 ([evidence](https://thirdpartyindex.com/evidence/240500)). They include [OpenAI](https://thirdpartyindex.com/vendors/openai), [Microsoft](https://thirdpartyindex.com/vendors/microsoft) and [Stripe](https://thirdpartyindex.com/vendors/stripe). No published changes since we first read it on 2026-11-09. [1 tracked vendor](https://thirdpartyindex.com/vendors/mailercloud#used-by), [WebEngage](https://thirdpartyindex.com/vendors/webengage), names Mailercloud as a subprocessor. Mailercloud (mailercloud.com): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index. - Page: https://thirdpartyindex.com/vendors/mailercloud - Documents last verified: 2026-11-12 - Transparency rating: 76/100 (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 5/5; Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8 - Supply chain: relies on 6 tracked vendors directly, 65 within two hops, 314 within three; 1 tracked vendors rely on it directly, 1 within two hops, 1 within three - Cite as: Mailercloud, Third Party Index, https://thirdpartyindex.com/vendors/mailercloud (data CC BY 4.0) ## Documents | Document | URL | Last verified | Last changed | |---|---|---|---| | Subprocessor list | https://www.mailercloud.com/legal/subprocessors/ | 2026-11-12 | 2026-11-09 | | Data processing addendum | https://www.mailercloud.com/legal/dpa/ | 2026-11-12 | 2026-11-09 | | Privacy policy | https://www.mailercloud.com/privacy-policy/ | 2026-11-12 | 2026-11-09 | | Terms | https://www.mailercloud.com/terms-and-conditions/ | 2026-11-12 | 2026-11-09 | | Status page | https://status.mailercloud.com/ | 2026-11-12 | 2026-11-09 | ## Subprocessors (11) As its own list states them. | Subprocessor | Purpose | Location | Listed since | |---|---|---|---| | Bouncer Sp. z o.o. | Email verification | Poland | 2026-11-09 | | [Cloudflare Inc.](https://thirdpartyindex.com/vendors/cloudflare.md) | DNS Services | USA | 2026-11-09 | | Deluxe Custom Apps LLC (GlockApps) | Email deliverability testing and monitoring | USA | 2026-11-09 | | [Functional Software Inc. (Sentry.io)](https://thirdpartyindex.com/vendors/sentry.md) | Error logging services | USA | 2026-11-09 | | [Gleap GmbH](https://thirdpartyindex.com/vendors/gleap.md) | Customer support services | Austria | 2026-11-09 | | Interserver.net | Data Centers | USA | 2026-11-09 | | [Microsoft Corporation](https://thirdpartyindex.com/vendors/microsoft.md) | Data Analytics | USA | 2026-11-09 | | [OpenAI OpCo, LLC](https://thirdpartyindex.com/vendors/openai.md) (AI model provider: OpenAI) | AI Tool | USA | 2026-11-09 | | OVH US LLC dba | Data Centers | USA | 2026-11-09 | | [Stripe Inc](https://thirdpartyindex.com/vendors/stripe.md) | Payment processing | USA | 2026-11-09 | | Velia.net | Data Centers | Germany | 2026-11-09 | Read from ([evidence](https://thirdpartyindex.com/evidence/240500)). CSV: https://thirdpartyindex.com/vendors/mailercloud/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 ### Its own affiliates (1) - Mailercloud Pvt LTD (India) ## Subprocessor of (1) Tracked vendors whose own subprocessor lists name it, and what they say they use it for. - [WebEngage](https://thirdpartyindex.com/vendors/webengage.md) ## Incidents reported by Mailercloud's subprocessors Incidents reported in the last 30 days on their own status pages by 3 vendors Mailercloud 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 Mailercloud lists as a subprocessor, reported Unable to start new Workspace Agent runs (critical) - 2026-11-11: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Elevated errors affecting logins, sign-ups, and ChatGPT features (minor) - 2026-11-11: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported US issues feed throwing intermittent errors (minor) - 2026-11-11: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Account emails not being delivered (major) - 2026-11-10: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported EU region replay ingestion latency (minor) - 2026-11-10: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported Elevated Errors On API (minor) - 2026-11-09: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Elevated ChatGPT Conversation Errors (minor) - 2026-11-08: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Elevated errors with image generation (minor) - 2026-11-06: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported ChatGPT Work and Dots Errors (minor) - 2026-11-04: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Elevated error rates across paid ChatGPT plans (minor) - 2026-11-04: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Ingestion delays across all data (minor) - 2026-11-03: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Delays in spans and transactions processing (major) - 2026-11-03: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Sentry.io dashboard and API is down (critical) - 2026-11-03: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported File upload errors in ChatGPT (minor) - 2026-11-02: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Sentry dashboard is down (critical) - 2026-11-01: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated Instant Payouts failures (no impact stated) - 2026-10-30: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud 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 Mailercloud lists as a subprocessor, reported Elevated Issuing errors from 17:13 - 20:41 UTC (minor) - 2026-10-27: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported 6.1 Sol Degraded Model Performance (minor) - 2026-10-27: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported Elevated error rates for Ads POST requests (minor) - 2026-10-24: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated Blik errors (no impact stated) - 2026-10-23: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported Help Center Chat Support Degraded (no impact stated) - 2026-10-23: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Delays in customer support responses (no impact stated) - 2026-10-22: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated Bancontact errors (no impact stated) - 2026-10-22: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported New Ad Accounts failing to provision admins (minor) - 2026-10-22: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Degraded Performance of Dots on Enterprise (minor) - 2026-10-22: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated Bancontact errors (no impact stated) - 2026-10-22: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Elevated ChatGPT conversation and Responses API errors (minor) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Authentication errors for some users (major) - 2026-10-21: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Increased latency processing integration webhooks (minor) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported Elevated FedRAMP API error rates for Astra and Sol (minor) - 2026-10-21: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Sentry.io not loading in US region (critical) - 2026-10-21: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Degraded performance in ChatGPT, Codex, and APIs (minor) - 2026-10-20: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Sentry.io not loading (major) - 2026-10-20: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported Elevated Revolut Pay errors (no impact stated) - 2026-10-19: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Sentry is down (critical) - 2026-10-19: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported File Download errors (minor) - 2026-10-15: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated declines on Mastercard (no impact stated) - 2026-10-15: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated declines on Visa (no impact stated) - 2026-10-15: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Widespread feature degradation (major) - 2026-10-15: [Stripe](https://thirdpartyindex.com/vendors/stripe#status), which Mailercloud lists as a subprocessor, reported Elevated Amazon Pay errors (no impact stated) - 2026-10-14: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud lists as a subprocessor, reported Delayed Costs data in the Compliance API (minor) - 2026-10-14: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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 Mailercloud lists as a subprocessor, reported Degraded performance in Codex and ChatGPT Work (minor) - 2026-10-14: [Sentry](https://thirdpartyindex.com/vendors/sentry#status), which Mailercloud lists as a subprocessor, reported Ingestion Halted for EAP data in EU (major) - 2026-10-13: [OpenAI](https://thirdpartyindex.com/vendors/openai#status), which Mailercloud 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/mailercloud --- 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