Courier vs Customer.io pricing

Name: Courier (Email APIs)
Brand: Courier

Verified 2026-10-23 (2 days ago)Source: Courier: www.courier.com/pricing, Customer.io: customer.io/pricingVerified shows the older of the two.

Monthly cost at three volumes

These services do not bill on a shared metric, so a like-for-like cost is unlisted.

Tiers of Courier and Customer.io aligned by position: free, entry, mid, top
Position	Courier	Customer.io
Free	$0 / moDeveloper · 10,000 messages sent (any channel) / mo	no tier
Entry	$0 base + usageBusiness	$100 / moEssentials · 1,000,000 emails sent / mo
Mid	no tier	$1,000 / moPremium
Top	Contact salesEnterprise	Contact salesEnterprise

Tightest documented rate limit of each service
Measure	Courier	Customer.io
Tightest limit	unlisted	unlisted

No changes recorded.

No change detected for either service in the last 90 days.