Mailchimp vs Customer.io
Marketing Automation pricing comparison · 2026
Mailchimp pricing ranges from $0–$350/month, while Customer.io ranges from $0–$1000/month. Mailchimp is typically 96% more affordable, though your actual cost depends on tier and team size.
Mailchimp
Mailchimp is one of the world's most popular email marketing and marketing automation plat
verified 27d ago
$500
$6.5K
Verdict · Vendr median · year 1
Mailchimp
saves
$6.0K
vs
Customer.io
· 25 seats
Cheapest
$500
Spread
92%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Standard
$6.0K/yr
year 1 license · $20/seat
Premium
$300K/yr
year 1 license · $1.0K/seat
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
↓ Lowest median
Median annual
$500/yr
Vendr · n=410
Median annual
$6.5K/yr
Vendr · n=14
REF · 01
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources
22 sourced facts
15 hidden-cost · 5 contract · Vendr median · 1 review platform
Last verified
3w ago
Confidence
High confidence
Sources
4 sourced facts
3 hidden-cost · Vendr median
Last verified
3w ago
Confidence
Medium confidence
REF · 02
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 05
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
User reviews
TrustRadius · Trustpilot · G2
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
License cost is computed from publicly listed plans (real math, list price × seats).
Median annual cost is from Vendr's deal flow when available — see source badges.
Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
VS
Mailchimp and Customer.io both operate in the marketing automation category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Mailchimp | Customer.io |
|---|---|---|
| Free | Free /month | Free /month |
| Essentials | $13 /month | $100 /month |
| Standard | $20 /month | $1K /month |
| Premium | $350 /month | Custom |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
Mailchimp
6 scenarios$45/month ($540/year)
Small Business (2,500 Contacts)
Standard plan at 2,500 contact tier with 30,000 monthly sends
$230/month ($2,760/year)
Growing Business (25,000 Contacts)
Standard plan at 25,000 contact tier with 300,000 monthly sends
$0/month
Micro Business on Free Plan
Customer.io
2 scenarios$145/month
Growing SaaS (10,000 Profiles)
Essentials base $100/month + $45 for 5,000 additional profiles at $0.009 each
$1,000
E-commerce App (50,000 Profiles)
+/month - Premium tier with custom volume for 50,000 profiles across multiple object types, plus SMS costs
Market Intelligence
Mailchimp
- Median annual cost
- $500
- Based on
- 410 deals
Customer.io
- Median annual cost
- $6,500
- Based on
- 14 deals