Software · head to head
Customer.io vs Mailgun
Customer.io
Software
Data-driven messaging for teams getting started, scaling and beyond
- From
- On request
- Rated
- -
The short version
- Each has a real cost: Customer.io essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that; Mailgun free plan caps at 100 emails per day
Where they differ
Only the attributes on which Customer.io and Mailgun actually diverge.
| Attribute | Customer.io | Mailgun |
|---|---|---|
| Pricing model | subscription | usage-based |
Identical on both: starting price (On request), free tier (No), platforms (Web), user rating (Not yet rated), category (Unknown).
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Customer.io
- Essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that
- Standard and Premium tiers show custom pricing only, and Enterprise is negotiated rate, so three of the four published tiers require a sales conversation
- Monthly plans accept credit card only; annual billing via invoice (ACH/wire) requires the annual commitment
Mailgun
- Free plan caps at 100 emails per day
- Basic plan starts at $15/mo for 10,000 emails then overages from $1.80 per 1,000; Foundation and Scale plans discount overage rates but still meter every email beyond the included volume
- Foundation ($35/mo) and Scale ($90/mo) plans are free for the first month only, then bill at full price
Pricing, plan by plan
Customer.io
On requestNo published plan breakdown. See the Customer.io review.
Mailgun
On requestNo published plan breakdown. See the Mailgun review.
Which should you pick?
Choose Customer.io if
Nothing in the data separates Customer.io from Mailgun on the points above - pick on price and on how each one feels to use.
Choose Mailgun if
Nothing in the data separates Mailgun from Customer.io on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Customer.io or Mailgun better?
- Neither clearly leads. Customer.io starts at On request and Mailgun at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Customer.io or Mailgun?
- Customer.io starts at On request and Mailgun at On request.
- Does Customer.io or Mailgun run on more platforms?
- Both run on Web, so platform support will not decide this one for you.
Related pages
More on Customer.io
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