Loops review 2026: SaaS-focused email marketing features, pricing plans, Y Combinator funding, and how it compares to Customer.io and Mailchimp.
Category
Email Marketing
Pricing
Freemium, from Free
Verified
Not yet
Last updated
July 18, 2026
Founded
2022
Headquarters
San Francisco, California, US
Free PlanWeb AppAPI
Overview
Loops is an email marketing platform built specifically for SaaS companies, unifying marketing campaigns, lifecycle automations, and transactional email under one contact list and API.
Founded in 2022 by Chris Frantz and Adam Kaczmarek through Y Combinator's Winter 2022 batch, the company has raised $3.2 million led by Craft Ventures and stayed a small, San Francisco-based team.
Key Features
The platform pairs a no-code visual email editor and automation builder with a developer-friendly API for triggering transactional and event-based emails directly from application code.
Native integrations with Stripe and Segment let product and growth teams sync billing and behavioral events into email automations without engineering support for every campaign.
Pricing
The Free plan covers up to 1,000 subscribed contacts and 4,000 emails a month with full feature access, aside from Loops branding in the footer.
Paid plans start at $49/month for 1,000 to 5,000 subscribers, scale purely with contact count, and include unlimited sends with no per-seat charges.
Key Features
Unified marketing, lifecycle, and transactional email — Sends broadcast campaigns, automated sequences, and transactional email from one contact list and API.
Visual email editor and automation builder — No-code drag-and-drop tools for building campaigns and multi-step automations.
Developer API and SDKs — Lets engineering teams trigger transactional and event-based emails directly from application code.
Stripe and Segment integrations — Syncs billing and product event data into email segmentation and automation triggers.
Behavioral segmentation — Targets audiences based on subscriber properties and in-product behavioral events.
A/B testing — Tests subject lines and content variations to optimize campaign performance.
Contact-based pricing with no seat fees — Entire teams can use the platform on one plan without per-user charges.
Deliverability-focused sending infrastructure — Built to reliably deliver both marketing and transactional email at scale.
Pros & Cons
Pros
Combines marketing, lifecycle, and transactional email in one tool instead of three
No per-seat pricing, so growing teams are not charged per user
Free plan includes full feature access up to 1,000 contacts
Native Stripe and Segment integrations suit SaaS billing and product data
Developer-friendly API appeals to engineering-led growth teams
Cons
Much smaller company and ecosystem than legacy platforms like Mailchimp
Feature set is narrower than dedicated customer engagement platforms like Customer.io for complex multi-channel journeys
Pricing scales with contact count, which can rise quickly for high-volume SaaS products
Fewer pre-built templates and design assets than larger competitors
Limited to email; no native SMS, push, or in-app messaging channels
Pricing
Free Free N/A
Paid (contact-based) From $49/month for 1,000 to 5,000 subscribers Monthly, scales with contact count
Frequently Asked Questions
Who is Loops built for
Loops is built specifically for SaaS and software companies that want marketing, lifecycle, and transactional email unified in a single platform.
Is Loops free to use
Yes, Loops offers a free plan for up to 1,000 subscribed contacts and 4,000 emails per month with full feature access, aside from a Loops branding footer.
Who founded Loops
Loops was founded in 2022 by Chris Frantz and Adam Kaczmarek, and went through Y Combinator's Winter 2022 batch.
How much does Loops cost after the free plan
Paid plans start at $49/month for 1,000 to 5,000 subscribers, with pricing scaling by contact count rather than by team seats.
Can developers trigger emails from code with Loops
Yes, Loops provides a developer API and SDKs for triggering transactional and event-based emails directly from application code.
How is Loops different from Mailchimp or Customer.io
Loops unifies marketing, lifecycle, and transactional email in one product with SaaS-specific integrations like Stripe and Segment, whereas Mailchimp focuses on marketing broadcasts and Customer.io focuses more on complex lifecycle messaging.