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Companies / Plunk

Plunk tech stack

useplunk.com

Plunk is an open-source email platform for transactional email, marketing campaigns, and automated workflows against one contact list. It serves teams that send email from their products and run campaigns.

Summarized from its homepage on 9 Nov 2026.

Classified asCommunicationsMarketing

The Plunk homepage

Vendors of Plunk and the evidence for each

Plunk declares 3 subprocessors.

VendorCategoryEvidenceLevel
AWS SESEmail and communicationsConfirmed
Subprocessor listProcesses data for the company9 Nov 2026Source
Privacy policyProcesses data for the company9 Nov 2026Source
Companies using AWS SES
HetznerCloud and infrastructureConfirmed
Subprocessor listProcesses data for the company9 Nov 2026Source
Privacy policyProcesses data for the company9 Nov 2026Source
Companies using Hetzner
StripePaymentsConfirmed
Subprocessor listProcesses data for the company9 Nov 2026Source
Privacy policyProcesses data for the company9 Nov 2026Source
Companies using Stripe
CloudflareCloud and infrastructureLikely
Websiteheader: cf-ray: a57cca988e858e9b-SJC9 Nov 2026Source
Companies using Cloudflare
Next.jsDeveloper toolsLikely
Websitescript: /_next/static/chunks/3zue46up8olr7.js9 Nov 2026Source
Companies using Next.js

Vendor's own statement, retrieved from the source URL on the date shown. StrataDB does not verify the underlying claim. Data sources.

See Plunk's full stack

Every vendor with its source and date, and an alert when Plunk adds or drops one. The same lookup works for any company.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call