Head-to-head
Astonish Email vs Customer.io
Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.
Astonish Email
UK email marketing for organisations sending large lists
From $32/mo
Visit Astonish EmailAt a glance
| Astonish Email | Customer.io | |
|---|---|---|
| Tagline | UK email marketing for organisations sending large lists | Messaging that actually fits your data. |
| Pricing model | Paid | Paid |
| Starts at | $32/mo | $100/mo |
| Founded | — | 2012 |
| AI-native | ||
| Categories | Email Marketing | Email Marketing, Automation |
| Vendor claimed |
Quick take
Pick Astonish Email if you need uk email marketing for organisations sending large lists. Pick Customer.io if you need messaging that actually fits your data.
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Astonish Email alternatives →
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Frequently asked
- Is Astonish Email better than Customer.io?
- It depends on your use case. Astonish Email is uk email marketing for organisations sending large lists, while Customer.io is messaging that actually fits your data. See the comparison above for which fits your team.
- What's the price difference between Astonish Email and Customer.io?
- Astonish Email starts at $32/mo. Customer.io starts at $100/mo.
- Can I migrate from Astonish Email to Customer.io?
- Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.