Customer.io vs Elastic Email pricing

Verified 2026-10-23 (2 days ago)Source: Customer.io: customer.io/pricing, Elastic Email: elasticemail.com/email-api-pricingVerified shows the older of the two.

Monthly cost at three volumes

Monthly cost of Customer.io and Elastic Email at three volumes and at your own
Volume	Customer.io	Elastic Email
small5K emails sent	$100 / moEssentials	$19 / moStarter
growing50K emails sent	$100 / moEssentials	$19 / moStarter
scale500K emails sent	$100 / moEssentials	no listed price
your volumeset above	$100 / moEssentials	$19 / moStarter

Each cell is the cheapest feasible plan, or the chosen model, at that volume, from the shared Overage cost function. "Cheapest model" only considers models with both an input and an output price listed. Volumes are example scenarios you can edit.

Tiers, aligned by position

Tiers of Customer.io and Elastic Email aligned by position: free, entry, mid, top
Position	Customer.io	Elastic Email
Free	no tier	$0 / moFree · 3,000 emails sent / mo
Entry	$100 / moEssentials · 1,000,000 emails sent / mo	$19 / moStarter · 50,000 emails sent / mo
Mid	$1,000 / moPremium	no tier
Top	Contact salesEnterprise	$49 / moPro · 50,000 emails sent / mo

Tightest rate limit

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

Changes in the last 90 days

No changes recorded.

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