Next.js
SendGrid
inbox-zeroOpen-source AI email assistant that triages, labels and drafts replies to help clear you…“Great for the onboarding drip email campaign”
Lifecycle EmailMaker says so +2 · source ↗
Loops
Email for SaaS: lifecycle sequences driven by product events, plus transactional sending.
Works with AI agents:llms.txtMCPAsk your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗
Where it fits
Lifecycle Email · Email for SaaSEvent-triggered onboarding sequences and transactional email from one tool, with a free tier to start.Trade-off: Email only; fewer segmentation and multichannel features than larger platforms.Transactional Email · Lifecycle / marketingSaaS onboarding sequences triggered by product events, with transactional sending included.
How Loops itself is built
2 tools, from its own code, website and Product Hunt page.
Who uses it
219 makers' products, each linked to the source that shows it, and 4 open-source projects that declare it in their code.
The maker says so 71Customer story 3Subprocessor list 15Seen on the website 152Declared in code 5How evidence is collected →
inbox-zeroOpen-source AI email assistant that triages, labels and drafts replies to help clear you…
FlowgladFlowglad is an open-source payments and billing provider that apps integrate without web…“We use Loops for our newsletter, where we send out (among other things) our semi-monthly product changelog”
Lifecycle EmailMaker says so +1 · source ↗
BaselightThe data layer for humans & AI“Marketing and transactional emails in the same place.”
Lifecycle EmailMaker says so +1 · source ↗
Supaboard AIBusiness intelligence tool where teams ask questions about their company data in plain E…“They are also solving a pressing problem”
Lifecycle EmailMaker says so +1 · source ↗
BooleanMaths PulseSuper Pixel with CAPI for user journeys and attribution“Email Client for Users”
Lifecycle EmailMaker says so +1 · source ↗
Coso.aiThe AI Agent for Your Social Media“Loops just works and is very well priced”
Lifecycle EmailMaker says so +1 · source ↗
HowdySend cold DMs that feel warm“Loops allows us to design beautiful transactional emails that are highly engaging.”
Lifecycle EmailMaker says so +1 · source ↗
Quantera.aiMarket intelligence & Equity insights just got 10x faster“For all things emails, loops has the easiest interface to get started”
Lifecycle EmailMaker says so +1 · source ↗
Arcane0-to-1 content marketing platform for B2B startups“Loops has helped us set up all our product / transactional emails - crucial for a new b2b SaaS platform.”
Lifecycle EmailMaker says so +1 · source ↗
Enhance-dThe Exercise App for the Diabetes Community“Good pricing model and flexible interface”
Lifecycle EmailMaker says so +1 · source ↗
Oxlo.aiScale across AI models without scaling your bill“Easy interface to design and send out custom emails to our customers and users”
Lifecycle EmailMaker says so +1 · source ↗
PreludePhone verification API that sends one-time codes over SMS, WhatsApp, RCS and voice, rout…“Excellent tool for customer engagement and transactional emails.”
Lifecycle EmailMaker says so +1 · source ↗
SproutA kanban board that feels at home on your Mac“Easy to use saas to manage marketing campaigns and waiting lists”
Lifecycle EmailMaker says so +1 · source ↗
ClimatizeInvest in renewable energy projects. Earn up to 10% annually“Loops offers an email marketing platform built for product-led growth teams, combining lifecycle automation with a clean, intuitive design, so you can focus on sending the right message, not wrestling with complex tools.”
Lifecycle EmailMaker says so +1 · source ↗
Monterey AICopilot for Product Insights“If you receive any newsletter today from Monterey AI, it's from Loops.”
Lifecycle EmailMaker says so +1 · source ↗
FramerNo-code website builder with visual editing, CMS and AI design tools for marketing sites.Lifecycle EmailCustomer story +1 · source ↗
InfisicalOpen-source secrets, certificate and privileged-access management platform for storing a…Lifecycle EmailSubprocessor list +1 · source ↗
BlacksmithHosted CI runners marketed as a faster, drop-in replacement for GitHub Actions' own runn…Lifecycle EmailSubprocessor list +1 · source ↗
MacalyMacaly is an AI builder that generates websites and apps from prompts, with direct editi…Lifecycle EmailSubprocessor list +1 · source ↗
Kuration AICursor for B2B ResearchLifecycle EmailSubprocessor list +1 · source ↗
SketchMac-based UI design app with a companion web app for collaboration, prototyping and hand…Lifecycle EmailSubprocessor list +1 · source ↗
onlookOpen-source visual editor for React apps: designers edit the UI and the changes are writ…“Loops is so easy to setup and design – everything is intuitive, and it was really easy to get our first automation running. Also, you can tie opens to HubSpot. While the product is still relatively early, it has all of the features we need for an early-stage company.”
Lifecycle EmailMaker says so · source ↗Open source: a project that declares Loops as a dependency in its public code — verifiable, but not necessarily a live product.
What makers say
52 makers on why they use Loops, in their own words on Product Hunt.
We use Loops for our product onboarding emails and product newsletter. What we appreciate most is how simple it is to use and how easy it is to create custom audiences! It gives you a lot of flexibility without adding complexity, especially if you have a developer background.
TadataSep 2026 ↗We use Loops for our product onboarding emails and product newsletter. What we appreciate most is how simple it is to use and how easy it is to create custom audiences! It gives you a lot of flexibility without adding complexity, especially if you have a developer background.
TadataAug 2026 ↗Loops is so easy to setup and design – everything is intuitive, and it was really easy to get our first automation running. Also, you can tie opens to HubSpot. While the product is still relatively early, it has all of the features we need for an early-stage company.
onlookSep 2026 ↗We use Loops for all our application emails, including post-onboarding messages, newsletter blasts, and more. Their APIs are great to work with and we love their Stripe integration, which allows us to easily send new users welcome messages right after they sign up.
Flipt CloudSep 2026 ↗When a befriended tech founder from San Francisco told us about Loops.so we were eager to finally test a MODERN email software for our startup and it did not disappoint us at all! @frantzlight you and your team are totally killing it!
ContentRadarSep 2026 ↗Loved and watch-outs
Themes that recur in makers' words and Hacker News comments, each linked to what it summarises, with how Product Hunt tags its reviews.
On Product Hunt 4.9★ · 134 reviews
simplicity 35user-friendly interface 27marketing email support 24transactional email support 20fast setup 15automation features 14developer friendly 12clean UX 11focus on SaaS companies 2
Read the reviews on Product Hunt ↗Reliability and open issues
Incidents on its status page1 in the last 90 days · 7 in the last year
- minor Delay in email metric processing Sep 2026
- major increased rate of 500 level responses Mar 2026
- minor Webhook Delivery Delayed Feb 2026
Alternatives to Loops
All alternatives by situation →
Userlist
Customer.io
Resend
Postmark
Mailgun
Amazon SES
NodemailerOn Product Hunt, people weigh it against: Resend, Plunk, Postmark.
Questions makers ask about Loops
Is Loops free?
Yes — there is a free tier a small product can run on; paid use starts at $49/mo. source ↗
Is Loops open source or self-hostable?
Not open source, and hosted only.
Can AI coding agents work with Loops?
It serves an llms.txt docs index; it has an official MCP server (io.github.loops-so/loops).
Who uses Loops?
219 makers' products we track, each with a source, and 4 open-source projects declare it in their code. source ↗