Customer.io vs MailerLite pricing

Verified 2026-10-24 (1 day ago)Source: Customer.io: customer.io/pricing, MailerLite: www.mailerlite.com/pricingVerified shows the older of the two.

Monthly cost at three volumes

Monthly cost of Customer.io and MailerLite at three volumes and at your own
Volume	Customer.io	MailerLite
small5K emails sent	$100 / moEssentials	$12 / moComfort
growing50K emails sent	$100 / moEssentials	$25 / moPowerexcludes unpriced usage
scale500K emails sent	$100 / moEssentials	$25 / moPowerexcludes unpriced usage
your volumeset above	$100 / moEssentials	$25 / moPowerexcludes unpriced usage

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 MailerLite aligned by position: free, entry, mid, top
Position	Customer.io	MailerLite
Free	no tier	$0 / moFree · 2,500 emails sent / mo
Entry	$100 / moEssentials · 1,000,000 emails sent / mo	$25 / moPower
Mid	$1,000 / moPremium	$12 / moComfort · 5,000 emails sent / mo
Top	Contact salesEnterprise	Contact salesEnterprise

Tightest rate limit

Tightest documented rate limit of each service
Measure	Customer.io	MailerLite
Tightest limit	unlisted	120 api requests per minutePower tier

Changes in the last 90 days

No changes recorded.

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