generated: '2026-08-12'
method: searched
source: https://zetaglobal.com/sailthru/
plan_count: 0
public_pricing: false
model: enterprise-contract
signup: https://my.sailthru.com/
note: >-
  Sailthru publishes no plans, tiers or list prices. It is sold as an
  enterprise contract through Zeta Global sales; the product page carries a
  demo request and no pricing. zetaglobal.com/pricing/ returns 404 and there
  is no pricing page anywhere on the Sailthru documentation site. API access,
  request ceilings and features such as the Premium-only endpoints (API error
  22, "You must be a Premium client to use this API call") are therefore
  contract-scoped and not publicly discoverable. Recorded as an honest zero
  rather than omitted, and no Pricing pointer is wired in apis.yml because
  there is no pricing page to point at.
plans: []
entitlement_signals:
- api_error: 22
  message: You must be a Premium client to use this API call
  meaning: Some endpoints are gated to a higher contract tier that is not publicly named.
- api_error: 21
  message: You must be approved to email
  meaning: Sending is gated on account approval, not on a self-serve plan.
evidence:
- {url: 'https://zetaglobal.com/pricing/', status: 404}
- {url: 'https://zetaglobal.com/sailthru/', status: 200, note: product page, demo request only}
checked: '2026-08-12'