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Home/Compare/Customer.io vs FusionAuth

Customer.io vs FusionAuth

A side-by-side comparison of pricing, plans, and recent product updates. Pricing data syncs daily once the product launches.

Customer.io

Messaging automation for lifecycle and product email.

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Category
email
Plans tracked
—
Entry price
—
Free plan?
—
See full Customer.io pricing & changelog →

FusionAuth

Downloadable and hosted auth for engineering teams.

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Category
auth
Plans tracked
—
Entry price
—
Free plan?
—
See full FusionAuth pricing & changelog →

Plan-by-plan pricing

Customer.io

Pricing data is being collected.

FusionAuth

Pricing data is being collected.

Customer.io vs FusionAuth FAQ

Customer.io vs FusionAuth: which is cheaper?
TrackRival snapshots both daily - see the plan tables above for the latest tracked tiers.
Does Customer.io or FusionAuth have a free plan?
Neither Customer.io nor FusionAuth shows a free plan in the latest snapshot.
Is Customer.io a good email alternative to FusionAuth?
Customer.io is tracked in email, while FusionAuth overlaps for similar buyers. Use the changelog section below to compare shipping cadence before you choose.
How often is this Customer.io vs FusionAuth comparison updated?
TrackRival refreshes pricing snapshots daily and appends new changelog entries whenever either product ships a release.

Which should you pick?

Both Customer.io and FusionAuth serve overlapping audiences (Customer.io in email, FusionAuth in auth).

  • Choose Customer.io if you value: messaging automation for lifecycle and product email.
  • Choose FusionAuth if you value: downloadable and hosted auth for engineering teams.
  • Subscribe to TrackRival if you want to be notified whenever either of them changes pricing or ships a major update — so you can react before your competitors do.

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