Which is cheaper, Customer.io or Mailgun?

Mailgun is 6.7x cheaper than Customer.io. Customer.io starts at $100/mo, Mailgun starts at $0/mo.

Does Customer.io have a free tier?

No, Customer.io does not have a free tier.

Customer.io has significant switching cost. Mailgun has moderate switching cost. Mailgun is easier to switch away from.

Customer.io

Automated messaging platform for targeted emails, push notifications, SMS, and in-app messages based on user behavior

Switching Cost: significant

Mailgun

← More affordable

Transactional email API service for developers with powerful sending infrastructure

Switching Cost: moderate

Price sensitivity favors Mailgun, which costs about 6.7x less than Customer.io.

The free tier advantage goes to Mailgun, which offers a no-cost entry point that Customer.io lacks.

If budget is your primary constraint, Mailgun is the clear winner with its more wallet-friendly pricing structure.

If budget is your primary constraint, Mailgun is the clear winner with its more wallet-friendly pricing structure.

Price Difference

6.7x

Mailgun is cheaper by $85/mo

Free Tier

Mailgun

Has a free tier option

Switching Costs

Mailgun

Lower switching costs for easier migration