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Fluxchek
Klaviyo account audits with a fixed, explainable scoring eng
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Fluxchek - 2026 Pricing, Features, Reviews & Alternatives
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Last updated: September 2026
Fluxchek overview
What is Fluxchek?
Fluxchek is a diagnostic tool for Klaviyo accounts, built for freelance email marketers and agencies who need a fast, technically defensible way to audit account health.
How it works: connect a Klaviyo account via a private API key (read-only access), and Fluxchek runs an automated scan across four categories — flow coverage (checking for welcome, abandoned cart, browse abandonment, post-purchase, and win-back flows), flow health (dead flows, single-email sequences, slow trigger delays), list hygiene (missing unengaged-suppression segments, duplicate or empty segments), and deliverability (spam complaint rate and bounce rate against defined thresholds). Each finding is generated by a fixed rule, not a generative AI model, so results are consistent and explainable — the same account produces the same score every time.
Security: Klaviyo API keys are never stored, logged, or persisted — they're used in-memory for the duration of a single scan, then discarded. Authentication is handled via Supabase; payment processing is handled by Lemon Squeezy as merchant of record, meaning Fluxchek never touches payment card data directly.
Built for agency workflows: connect and track multiple client Klaviyo accounts under separate dashboard views, export full findings as a branded PDF report, and re-run scans monthly to track whether previous fixes actually held over time.
Free tier available with a limited health score; paid plans (Starter, $39/mo, 1 connected account; Agency, $79/mo, up to 10 connected accounts) unlock full findings and PDF export.
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Fluxchek alternatives
Fluxchek
Starting from
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Per month
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Brevo Marketing Platform
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