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Companies / Buttondown

Buttondown tech stack

buttondown.com

Buttondown is an email platform for sending newsletters, with automations, personalization, an editor, and an API. It serves both individual creators and businesses with large teams.

Summarized from its homepage on 5 Nov 2026.

Classified asCommunications

The Buttondown homepage

Vendors of Buttondown and the evidence for each

Buttondown declares 11 subprocessors.

VendorCategoryEvidenceLevel
CloudflareCloud and infrastructureConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Websiteheader: cf-ray: a593348638f1d452-SEA12 Nov 2026Source
Companies using Cloudflare
StripePaymentsConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Privacy policyProcesses data for the company12 Nov 2026Source
Companies using Stripe
Amazon Web ServicesCloud and infrastructureConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Amazon Web Services
Google WorkspaceProductivityConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Google Workspace
HerokuCloud and infrastructureConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Heroku
MailgunEmail and communicationsConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Mailgun
PlainSupport and chatConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Plain
PostmarkEmail and communicationsConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Postmark
SentryObservabilityConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Sentry
SlackProductivityConfirmed
Subprocessor listProcesses data for the company12 Nov 2026Source
Companies using Slack

3 more vendors

See Buttondown's full stack and the source for every claim.

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

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

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  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call