Sendmarc
Sendmarc declares 25 subprocessors in its subprocessor list, which we last checked on Nov 12, 2026 (evidence). They include OpenAI, Microsoft and Anthropic. No published changes since we first read it on Sep 22, 2026. 2 tracked vendors name Sendmarc as a subprocessor, including SOPHOS and Capsule8.
Not loaded by any published homepage.
Subprocessors CSV of Sendmarc's subprocessors · Atom feed of Sendmarc's subprocessors DORA draft CSV of Sendmarc's subprocessors as declared by Sendmarc what's this? ·
25 third parties.
| Name | Purpose | Location | Listed since |
|---|---|---|---|
| Anthropic AI | Generative AI | Other | |
| Chargebee | Billing, invoicing, and payment management; Subscription Management | US | |
| ClickUp | Collaboration; Project management | US | |
| Cloudflare | Cloud Security & DNS hosting; DNS hosting, cloud security, and network security | Global | |
| Datadog | Application Monitoring; Infrastructure and application monitoring | EU | |
| DigitalOcean | Cloud provider | US | |
| Docusign | Contract Management; Document signing | US | |
| Entri | DNS Setup (customer optional); Optional integrations and tools | US | |
| FastMail | Cloud provider | US | |
| Fathom | Collaboration; Meeting recording and transcription tool | US | |
| HubSpot | CRM, marketing tools, knowledge base, and help desk; Sales, Marketing & Support | EU | |
| Introw | PRM functionality; Sales | Belgium | |
| Microsoft Azure | Application hosting, application security, and hosted identity management; Infrastructure Hosting | EU | |
| Microsoft Sharepoint | Document Management; Internal documentation and file management | EU | |
| Miro | Collaboration; Productivity tool | EU | |
| monday.com | Collaboration; Project management | US | |
| Office 365 | Email and productivity tools; Productivity | EU | |
| OpenAI AI | Natural language processing and generative AI services; Productivity | US | |
| PostHog | Product, usage, and application analytics | EU | |
| Sentry | Application Monitoring; Application error monitoring | EU, US | |
| Slack | Collaboration; Internal communication and product support | US | |
| Thinkific | Customer support; Online Learning | Canada | |
| Twilio SendGrid | Email notifications; Transactional email | US | |
| Upflow | Finance and payments | US | |
| Xero | Accounting software; Finance | US |
Web TechnologiesCSV of Sendmarc's web technologies · Atom feed of Sendmarc's web technologies
Sendmarc's homepage made 103 requests to 20 domains, 5 services controlled by another company, and 1 domain not identified.
5 third parties by category: Advertising 2Analytics 2Marketing automation 1
mpc2-prod-26-is5qnl632q-uc.a.run.app
3 tracked companies loaded by the homepage are not in Sendmarc's subprocessor list. A website can use a service without it processing customer data.
Subprocessor of (2)CSV of the companies listing Sendmarc · Atom feed of the companies listing Sendmarc
ComplianceCSV of Sendmarc's compliance · Atom feed of Sendmarc's compliance
- Certified
- Says it complies with
Certifications as Sendmarc's trust center lists them; reports are usually shared on request (evidence)
Incidents reported by Sendmarc's subprocessorsCSV of incidents reported by vendors Sendmarc lists · Atom feed of incidents reported by vendors Sendmarc lists
276 reported incidents in the last 30 days, by 13 of the vendors Sendmarc lists as subprocessors.
A subprocessor list names a company, not the service an incident touched. This does not show that Sendmarc was involved.
And 251 more. All of them: CSV · Who is around them.
ChangesCSV of Sendmarc's changes · Atom feed of Sendmarc's changes
See the list as we read it on any date: Time machine
None since tracking began.
Rating badge for Sendmarc's site
It updates with the rating.
<a href="https://thirdpartyindex.com/vendors/sendmarc"><img src="https://thirdpartyindex.com/badge/sendmarc.svg" alt="Sendmarc transparency rating on Third Party Index" height="20"></a>[](https://thirdpartyindex.com/vendors/sendmarc)