Customer.io pricing and rate limits

Name: Customer.io (Email APIs)
Brand: Customer.io
Price: 100 USD

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Verified 2026-10-24 (1 day ago)Source: customer.io/pricing, docs.customer.io/integrations/api/customerio-apis/

Cost at your volume

Monthly cost per tier at the volume entered above
Tier	Monthly cost	Breakdown
Essentials$100 / mo	$100 / mo cheapest	base $100
Premium$1,000 / mo	$1,000.60 / mo	base $1,000 + Contacts / subscribers / profiles: unpriced + Emails sent overage $0.60 (excludes unpriced usage)
EnterpriseContact sales	unlisted	Contact sales

Cheapest: Essentials at $100/mo.

Example volumes you can edit; not vendor data. Costs use the shared Overage cost function, identical to the API and MCP. Usage the vendor does not price is excluded, never guessed. Optional add-ons are not included in these totals. Overage marked pay-as-you-go applies only if you enable it; otherwise the allowance is a hard cap.

Tiers

Customer.io tiers: price, included allowances, overage rates, limits and features
Item	Essentials	Premium	Enterprise
Base price
Price	$100 / mo	$1,000 / mo	Contact salesprice unlisted
Included
Contacts / subscribers / profiles	5,000 / cap	unlisted	unlisted
Emails sent	1,000,000 / mo	unlisted	unlisted
Overage rates
Contacts / subscribers / profiles	$0.009 per 1$9 / 1,000 contacts	unlisted	unlisted
Emails sent	$0.12 per 1,000$0.12 / 1,000 emails	$0.12 per 1,000$0.12 / 1,000 emails	$0.12 per 1,000$0.12 / 1,000 emails
Features
audit logs	unlisted	unlisted	Available by Consultation

Prices in USD, per the vendor's billing period. Hover or focus a number for the line it came from, with a link to the stored snapshot. "unlisted" means the vendor does not publish it; we never fill the gap.

Rate limits

No rate limits recorded for this service: unlisted.

Change timeline

No changes recorded.

Tracking began 2026-10-24; no change has been detected since.

Sources

Captured source pages and their last snapshot
URL	Kind	Last captured	Snapshot
customer.io/pricing	pricing	2026-10-24	snap_customer-io-pricing-0_20261023T184001Z
docs.customer.io/integrations/api/customerio-apis/	limits	2026-10-24	snap_customer-io-limits-0_20261024T024638Z

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