Back to Growth Toolbox
Email Marketing · Automation · Messaging API

Loops

The all-in-one email platform that combines transactional, marketing, and workflows in a minimalist interface. Loops is the modern tool par excellence for founders and growth people who want a complete email solution without the complexity of Mailchimp or the dev-only approach of Resend.

Try the tool
Who's it for?FounderSolopreneurGrowth

Review by a Growth Engineer

My verdict: The email tool I've been waiting for years - everything unified, simple, and pricing that respects bootstrappers.

Loops solves a problem I've had for a long time: email fragmentation. Before, it was Resend for transactional (because the API is clean), Mailchimp for marketing (because it's the standard), and cobbled-together webhooks between the two. With Loops, I have ONE tool, ONE contact database, and workflows that connect everything naturally.

What really makes the difference: native multilingual management. You can create a campaign and define language variants directly in the same flow. No other tool does this as simply. For a product targeting multiple markets, it's a game-changer.

What I like less: The UI can be confusing at first - it's very minimalist, almost spartan. If you're coming from a tool like Mailchimp with its dozens of templates and sophisticated drag-and-drop editor, you'll find it light. Analytics could also be more visual with customizable dashboards.

My advice: Start by connecting your app via the API and send your first transactional emails. Once you see the power of unified events, you'll naturally expand to Loops (workflows) and campaigns. The free tier lets you test everything with no commitment - take advantage of it.

Why add it to your stack?

Loops replaced my Resend + Mailchimp combo. Before, I had to manage transactional emails on one side and marketing on the other, with duplicated contacts and fragmented workflows. Now everything is centralized: when a user signs up, my app sends the event via API, and Loops handles everything - welcome email, onboarding sequence, and later newsletters. Native multilingual support saved me hours of setup.

What you can do with it

  • 1Send transactional emails (password reset, confirmations) via API
  • 2Create automated onboarding sequences based on product events
  • 3Launch weekly newsletters segmented by language or interest
  • 4Trigger event-based workflows (upgrade, churn risk, milestone)
  • 5Centralize all your SaaS contacts in a single database

What it does

  • Unlimited transactional emails (API + SMTP)
  • Marketing campaigns with visual editor
  • Loops (event-based automated workflows)
  • Native multilingual campaign management
  • Advanced segmentation by contact properties
  • Native integrations (Segment, Zapier, webhooks)
  • JavaScript SDK and complete REST API

How much?

Starting at $0/month

Very generous free tier: 1000 contacts + 4000 emails/month with ALL features. Paid plans based on subscriber count (not sends). Starting at $49/month for 5000 contacts. Unlimited transactional on all paid plans. No per-seat fees - unlimited team included.

The detailed verdict

Do I really need this?

For me, Loops has become indispensable. It's the only tool that truly combines transactional + marketing + automation without compromise. If you're building a SaaS or digital product, you need all three. Having everything in one place with a clean API and unified events changes everything. I'm not going back.

Does it play nice with my stack?

The API is clean and well-documented. The JavaScript SDK is simple to use. Webhooks available for all events (opens, clicks, bounces). Native integrations with Segment, Zapier, and major tools. However, no native n8n integration - you need to go through the REST API, which is still very doable. SMTP available if you need legacy compatibility.

Is it easy to pick up?

There's a real but short learning curve. The 'Loops' philosophy (the workflows) takes some getting used to if you're coming from Mailchimp. The docs are excellent with practical guides. Support responds quickly and well. Plan 1-2 hours to really understand the system, after that it's smooth sailing.

Is the UX any good?

The interface is minimalist, almost too much so. The first few days, I was a bit lost - where are the templates? How do I create a workflow? Once you understand the logic (everything revolves around 'Loops'), it becomes crystal clear. The email editor is simple but effective. The analytics dashboard could be more visual. It's clearly designed by and for people who prefer clarity over feature overload.

Is it worth it?

Unbeatable. The free tier offers 1000 contacts and 4000 emails/month with ALL features - no artificial limitations. Compared to Mailchimp charging from the first contact or Customer.io starting at $150/month, it's night and day. Pricing by subscriber (not by send) is transparent and predictable. For a solopreneur or early-stage startup, it's the best deal on the market.

What I like

  • You want a single platform for everything (transactional + marketing + automation) without juggling between Resend and Mailchimp
  • You manage multilingual audiences and need localized campaigns without creating 5 different workflows
  • You're a founder/solopreneur who wants to start free with a tool that scales without blowing your budget

What I like less

  • You need React Email and a 100% code-first stack - Resend will be more suitable
  • You're looking for ultra-sophisticated email templates and a complete drag-and-drop editor like Mailchimp
  • You have a marketing team that wants advanced analytics reports with customizable dashboards

Need more details or help building your ideal stack?

Visit official siteGet advice