Comparison
tinysend vs Customer.io
Customer.io is a powerful marketing automation platform — but its complexity and cost make it overkill for many teams. tinysend gives you sequences-as-code, usage-based pricing, and BYOK sending at a fraction of the cost.
Get started free →Why teams switch to tinysend
60%+ cheaper
Customer.io charges $100+/month for 50K emails and 25K contacts. tinysend charges $52.50 — and you only pay for what you use.
Bring Your Own Key
tinysend lets you plug in your own SES, Postmark, or Mailgun account. Customer.io forces you through their sending infrastructure.
Built for agents & developers
Define sequences as code, deploy via CLI, automate everything via API. Customer.io is a UI-first product — tinysend is API-first from day one.
Feature comparison
A direct feature-by-feature breakdown
| Feature | tinysend | Customer.io |
|---|---|---|
| Usage-based pricing | ||
| Bring Your Own Key (BYOK) | ||
| Sequences as code (CLI) | ||
| Email automation / sequences | ||
| REST API | ||
| Transactional email | ||
| Contact segmentation | ||
| Webhooks | ||
| Free tier | ||
| No seat-based limits | ||
| Agent-native (AI automation) |
Pricing comparison
At 50K emails/month and 25K contacts
tinysendper month
- Usage-based — pay for what you use
- BYOK — use your own sending provider
- Free tier included
per month
- Flat-rate plans — pay whether you use it or not
- No BYOK option
- Seat limits on lower tiers
Who should use tinysend?
Developer teams who want email sequences defined in code and deployed via CLI.
Startups and scale-ups that need automation without the Customer.io price tag.
Teams using AI agents to automate email workflows end-to-end.
Companies with their own sending infrastructure (SES, Postmark, Mailgun) who want to keep using it.
Anyone tired of paying flat-rate SaaS fees for capacity they don't fully use every month.
Exploring all your options?
See the best Customer.io alternatives →Please bring your own sender...
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Ready to start sending?
1,000 emails/month free. Full API access. Set up in under 5 minutes.