Customer.io vs Resend: which is cheaper?

Customer.io starts at an unpublished tier, while Resend starts at $20/mo. TrackRival snapshots both daily as plan pages change.

Does Customer.io or Resend have a free plan?

Resend shows a free plan in the latest snapshot, while Customer.io does not.

Is Customer.io a good email alternative to Resend?

Customer.io and Resend are both tracked in TrackRival's email category. Use the changelog section below to compare shipping cadence, not just headline pricing.

How often is this Customer.io vs Resend comparison updated?

TrackRival refreshes pricing snapshots daily and appends new changelog entries whenever either product ships a release.

Customer.io vs Resend

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 →

Resend

Email for developers.

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Category: email
Plans tracked: 4
Entry price: $20/mo
Free plan?: Yes

See full Resend pricing & changelog →

Plan-by-plan pricing

Customer.io

Pricing data is being collected.

Resend

Free

Resend

Free

3,000 emails / mo
Sending & receiving
Ticket support
10,000 automation runs
30-day data retention
+ 1 more

Pro

Resend

$20/mo

50,000 emails / mo
Extra emails: $0.90 / 1,000
10 domains
100 AI credits / mo
No daily limit
+ 1 more

Scale

Resend

$90/mo

100,000 emails / mo
Extra emails: $0.90 / 1,000
Slack & ticket support
1,000 domains
500 AI credits / mo
+ 1 more

Enterprise

Resend

Custom

A plan based on your specific needs
Priority support
Flexible automation runs
Flexible data retention
Flexible domains
+ 1 more