Loops vs Customer.io
Updated
Loops or Customer.io: which should you pick?
SaaS lifecycle email, two price levels. Free plans, pricing basis, automation and transactional email from each vendor's pricing page, plus who should pick which.
- Loops free emails
- 4,000/mo
- Loops free emails
- Customer.io free plan
- 14-day trial
- Customer.io free plan
- Lumail free emails
- 3,000/mo
- Lumail free emails
TL;DR
Loops vs Customer.io side by side
Every Loops and Customer.io cell comes from the vendor's public pricing page, verified on August 17, 2026. Lumail is the third column, as the alternative.
| Loops | Customer.io | Lumail (alternative) | |
|---|---|---|---|
| Free plan | 1,000 contacts and 4,000 sends/month | No free plan; 14-day trial, plus free test sends to 10 recipients | $0, 3,000 emails/month |
| Paid from | $49/month for 1,000–5,000 subscribed contacts | Essentials from $100/month | $20/month, 40,000 included, then $0.60/1,000 |
| Pricing basis | Subscribed-contact tier; unlimited sends on paid plans | Profiles plus email volume; a usage-based option costs $0.40 per 1,000 messages | Unlimited subscribers; pricing follows email volume |
| Automation | Event-driven loops and product lifecycle email | Visual journeys with event, segment, and date triggers, branches, delays, and A/B tests | Graph workflows with triggers, branches, goals, exits, and A/B paths |
| AI and developer access | API-oriented SaaS workflow | In-app AI agent, hosted MCP, and a CLI | ChatGPT OAuth, MCP, skills, CLI, SDK, REST API, and visual editor |
| Transactional email | Included for non-audience recipients on paid plans | Transactional email and push via API, counted toward email volume | Included through API, SMTP, SDK, CLI, and agent tools |
| Publishing | Focused on product email rather than hosted publishing | Broadcasts and one-off sends; not a hosted newsletter platform | Capture pages and custom web domains; not a general website builder |
| Best for | SaaS teams that want a polished lifecycle email product | Product-led SaaS teams that want event-driven journeys across channels on their own customer data | Teams that want campaigns, workflows and transactional email priced by volume |
Choose Loops if
- Your main use case is SaaS lifecycle email
- You want a free plan with 1,000 contacts and 4,000 sends
- Unlimited sends for a known contact tier fit your usage
Choose Customer.io if
- You message users across email, SMS, push and in-app
- You need warehouse sync, custom objects or HIPAA support
- You want a hosted MCP and CLI next to an in-app AI agent
Where Lumail fits
Both price by contacts or profiles. If your SaaS list keeps growing past the people you email each month, a send-based plan with unlimited subscribers is usually cheaper.
Lumail prices by emails sent, with unlimited subscribers on every plan: $0 for 3,000 emails a month, Premium at $20 a month for 40,000 emails then $0.60 per 1,000, and Business at $200 a month for 400,000 emails then $0.40 per 1,000. Campaigns, graph workflows and transactional email (API and SMTP) live in one account, and agents can run it through MCP, the CLI or the SDK.
Read the full Lumail vs Loops and Lumail vs Customer.io breakdowns, or the long-form Loops and Customer.io articles.
Sources
- Loops pricing, verified on
- Customer.io pricing, verified on
Frequently asked questions
Is Loops cheaper than Customer.io?
Yes at entry. Loops has a free plan and paid from $49 a month for 1,000 to 5,000 contacts. Customer.io Essentials starts at $100 a month, with a 14-day trial.
Do Loops and Customer.io handle transactional email?
Both do. Loops includes transactional email for non-audience recipients on paid plans. Customer.io sends transactional email via API, counted toward email volume.
Do Loops and Customer.io include transactional email?
Loops: Included for non-audience recipients on paid plans. Customer.io: Transactional email and push via API, counted toward email volume.
Is there an alternative to Loops and Customer.io that prices by emails sent?
Lumail. It is $0 for 3,000 emails a month, then $20 a month for 40,000 emails and $0.60 per extra 1,000, with unlimited subscribers on every plan. Campaigns, workflows and transactional email share one account.
Where do these numbers come from?
From each vendor's public pricing page (Loops pricing and Customer.io pricing), last verified on August 17, 2026. Prices change, so confirm on the vendor's page before you buy.
Keep comparing
Not sold on Loops or Customer.io?
3,000 emails a month free. Unlimited subscribers on every plan. Campaigns, automations and transactional email on one domain.