Customer.io vs SendMails

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Customer.io

See full pricing history

USD · US · source: customer.io

Plan	Pricing	Charged by	Offer type
Essentials	USD 100 monthly Starts at $100/month billed monthly	Flat · per month	Standalone · Starting at
Premium Highlighted	USD 1000 / month with annual commitment Starts at $1,000/month billed yearly	Flat · per month	Standalone · Starting at

SendMails

See full pricing history

USD · US · source: sendmails.io

Plan	Pricing	Charged by	Offer type
Basic	USD 50 monthly $50/month	Flat · per month	Standalone · Fixed
Pro Highlighted	USD 80 monthly $80/month	Flat · per month	Standalone · Fixed
Unlimited	USD 100 monthly $100/month	Flat · per month	Standalone · Fixed

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Customer.io

Essentials

Plan card Profiles: 5,000

Included
Plan card Emails: 1 million/month

Included
Plan card Visual workflow builder: Included

Premium

Plan card Unlimited workspaces: Included
Plan card Advanced governance: Included
Plan card Dedicated implementation support: Included

SendMails

Basic

Plan card 50,000 subscribers: Included
Plan card Unlimited email campaigns: Included
Plan card Unlimited workflow automations: Included
Plan card Unlimited lead-capture popups: Included

Pro

Plan card 250,000 subscribers: Included
Plan card Unlimited segmentation: Included
Plan card Email validation integration: Included
Plan card API integrations: Included

Unlimited

Plan card Unlimited subscribers: Included
Plan card Unlimited email campaigns: Included
Plan card Unlimited workflow automations: Included
Plan card Outgoing webhooks: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Customer.io

August 27, 2026 Source
- Essentials: USD 100 monthly
- Premium: USD 1000 / month with annual commitment

SendMails

August 27, 2026 Source
- Basic: USD 50 monthly
- Pro: USD 80 monthly
- Unlimited: USD 100 monthly