✦ vs Customer.io
The Customer.io alternative built for marketers AND developers.
Customer.io is built for developer-led messaging — Mailazy too. But Customer.io starts at $150/mo and grows steeply. Mailazy delivers the same event-driven workflows + AI at a fraction of the price.
Feature comparison
Mailazy vs Customer.io.
| Feature | Mailazy Recommended | Customer.io |
|---|---|---|
| Marketing & automation | ||
| Visual workflow builder | ||
| AI email builder | Limited | |
| Drag-drop template editor | ||
| Developer & platform | ||
| Event-triggered workflows | yes (excellent) | |
| Schema-validated event payloads | ||
| Transactional API + SMTP | ||
| Webhook events | ||
| Branding & agencies | ||
| White-label / reseller | ||
| Pricing & plans | ||
| Free tier | 1,000 contacts | No (15-day trial) |
| Entry price | Free | $150/mo (Essentials) |
| Features | ||
| Bring your own AWS SES | ||
Pricing comparison
Developer-first marketing at a friendlier price.
Volume
Mailazy
Customer.io
You save
5,000 contacts
$100
$150 (Essentials)
—
25,000 contacts
$100
$300 (Premium)
—
100,000 contacts
~$200
~$1,000+
~80% less
500,000 contacts
~$500
Custom (sales)
—
Estimates based on public list prices. See full pricing for committed-use and BYO-SES rates.
Three reasons to leave Customer.io.
Same event model
Schema-validated events, branches, A/B splits. The Customer.io feature set, plus AI.
Cheaper from day one
Free tier for 1,000 contacts. Customer.io starts at $150/mo.
AI email builder
Newsletter drafts in plain English. Customer.io has none.
Migration in 3 steps
Switch in under a day.
- 1 Export Customer.io events
Use their API to export event schemas. Mailazy imports them with one command.
- 2 Map workflows 1:1
Our migration assistant translates Customer.io campaigns to Mailazy workflows automatically. Verify each one.
- 3 Cutover with parallel sends
Run both for one day. Compare delivery, opens, clicks. Switch when confident.
Common migration questions
Will my Customer.io campaigns import?
Yes. Campaign shape (trigger + segments + content + cadence) maps directly to Mailazy workflows. Our migration assistant translates them automatically.
Are Liquid templates supported?
Yes — Customer.io Liquid syntax works in Mailazy without changes. Variables, filters, and conditionals all parse the same way.
What about my event schemas?
Mailazy supports JSON Schema or TypeScript types for events. Customer.io's event format imports directly — same property structure, same validation.
Does Mailazy match Customer.io's deliverability?
Yes — same major ESP integrations (SES, Sendgrid, Mailgun routing). Plus the option to BYO AWS SES for full control over reputation.
How does pricing compare?
At 25k contacts: Mailazy $100 vs Customer.io $300+. At 100k: $200 vs $1,000+. At 500k: $500 vs sales-led custom pricing. Savings scale with volume.