Loops

API

Marketing and transactional email platform for software companies

Price: Free tier, then paid
Access: API key

About

Loops is an email tool for SaaS teams that combines newsletters, event-triggered workflows and transactional email in one editor and API. The free plan sends up to 4,000 emails a month to your 1,000 newest contacts; paid plans are priced by subscribed contacts.

What you can do with it

Send newsletters and product announcements to contact segments
Trigger onboarding email sequences from events sent by your app
Send password resets and receipts with templated transactional email

Get started

Verify a sending domain
Create an API key in your Loops settings
Build a workflow that starts on an event

Example

curl -X POST https://app.loops.so/api/v1/events/send \
  -H "Authorization: Bearer $LOOPS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email":"test@example.com","eventName":"testEvent"}'

Details

Hosting: Hosted service
Available in: Worldwide
Official SDKs: JavaScript/TypeScript, Go, PHP, Ruby
MCP server: Remote