Pick what starts the workflow
Start a workflow when someone signs up, changes plan, joins a list, or does something in your app.
From teams sending with Loops
Cosmos uses Loops to run a six-email onboarding sequence.
“Loops allows us to customise communication for different cohorts on the fly, which is super important and helpful when you are running multiple experiments for a diverse set of users”
“Loops is super simple, intuitive, and has everything we need without the bloat”
“Loops is focused, fast, and does just what we need”
Send the right email to the right person
Add waits, paths, and filters after the trigger to decide who gets which email, and when. People who no longer fit, like someone who just upgraded, drop out before the next email.
Test a version before everyone gets it
Send different versions of an email to part of your audience, compare the results, and send everyone the one that works best.
Build it yourself or hand it to your agent
Use the visual builder, or let your AI agent set it up for you.
Frequently asked questions
What can start a workflow in Loops?
Four things: a new contact is added, a detail about a contact changes, someone subscribes to a mailing list, or your app sends Loops an event. You choose whether each person can go through once or every time it happens.
How do contacts leave a workflow?
When they reach the end. They can also leave early if they stop matching a filter that covers the rest of the workflow, like someone who upgrades before a reminder. If joining a list started the workflow, unsubscribing from that list takes them out too.
Can I change a workflow after it starts?
Yes. Pause it, make your change, and turn it back on. While it’s paused, new people wait up to 24 hours to join, and anyone on a timer keeps their send time. Stopping a workflow ends it and lets no one new in.
Is a workflow the same as a drip campaign?
A drip campaign is one kind of workflow: a few emails with waits between them. Workflows can also send people down different paths, drop people who no longer fit, and test versions of an email, so you don’t need separate drip campaign software.
How do I test a workflow before real contacts enter?
Add test contacts whose addresses end in example.com or test.com, then trigger the workflow for them. Loops runs every step but never sends to those domains. You can also send yourself a preview of each email.
Can an AI agent build workflows?
Yes. Connect Claude, ChatGPT, or another AI tool to the Loops MCP server and ask it to build or change a workflow. Developers can do the same with the Loops API or the Loops CLI.
Do workflows cost extra?
No. Every Loops plan, including Free, has workflows, events, and experiments. Plans are priced by subscribed contacts, not by workflow or by send.