generated: '2026-08-13' method: searched source: https://heyo.com/pricing/ limit_count: 0 note: >- Heyo publishes no API rate limits, because Heyo publishes no public API. The developer-facing surface referenced in Heyo marketing copy ("Custom and Full-service Solutions -- Enterprise DIY Campaign Builder -- Developer API" on the heyo.com homepage) is not a link and resolves to no documentation on any Heyo host: /api, /developer, /developers, /docs and /api-docs all return 404, and api.heyo.com / developer.heyo.com / docs.heyo.com do not resolve in DNS. The only published usage ceilings are PLAN QUOTAS on the campaign-builder product (leads per month, page views per month, Facebook fan count, campaign and brand-page counts), which are captured in plans/heyo-plans-pricing.yml. They are billing quotas enforced on the product, not request-rate limits, and Heyo documents no rate-limit response headers and no exhaustion status code. limits: [] headers: [] x-evidence: - url: https://heyo.com/pricing/ status: 200 - url: https://heyo.com/api status: 404 - url: https://heyo.com/developer status: 404 - url: https://heyo.com/api-docs status: 404 checked: '2026-08-13'