What can I automate with Loops in Sim?

You can create contact, update contact, find contact, delete contact, and send transactional email with Loops in Sim, plus 8 more Loops tools listed on this page. Each runs as a tool inside an AI agent, so the agent can combine Loops with any other connected service and apply LLM reasoning between steps.

How do I connect Loops to Sim?

(1) Create a free account at sim.ai. (2) Create an agent in your workspace. (3) Drag a Loops block onto the workflow builder. (4) Paste your Loops API key to authenticate. (5) Pick a tool such as "Create Contact", wire up its inputs, and click Run.

Can Loops events start a Sim agent automatically?

Yes. Sim supports 8 triggers for Loops: Loops Email Delivered, Loops Email Opened, Loops Email Clicked, Loops Email Hard Bounced, Loops Email Soft Bounced, Loops Campaign Email Sent, and 2 more. Add a Loops trigger to your agent, and every matching Loops event starts a run with the event data available to the rest of the workflow.

Back to Integrations

Loops integration for AI agents

Q: How do I create contact with Loops in Sim?

Add a Loops block to your agent and select "Create Contact" as the tool. Create a new contact in your Loops audience with an email address and optional properties like name, user group, and mailing list subscriptions. Fill in the required fields. Inputs can reference outputs from earlier steps, such as text generated by an AI block or data fetched from another integration.

Manage contacts and send emails with Loops

View docs

Last updated October 14, 2026

What Sim agents can do with Loops

Create and manage contacts, send transactional emails, and trigger event-based automations.

Category: Email
Authentication: API key
Tools: 13
Triggers: 8
Documentation: Loops docs

How to automate Loops with Sim

Create a free account
Sign up at sim.ai in seconds. No credit card required. Your workspace is ready immediately.
Add a Loops block
Open your workspace, drag a Loops block onto the workflow builder, and paste in your Loops API key.
Configure, connect, and run
Pick the tool you need, wire in an AI agent for reasoning or data transformation, and run. Your Loops automation is live.

Loops triggers

Add a Loops trigger to a Sim agent and it starts a run whenever one of these Loops events occurs.

Loops Email Delivered

Trigger workflow when a Loops email is delivered

Loops Email Opened

Trigger workflow when a Loops email is opened

Loops Email Clicked

Trigger workflow when a link in a Loops email is clicked

Loops Email Hard Bounced

Trigger workflow when a Loops email hard bounces

Loops Email Soft Bounced

Trigger workflow when a Loops email soft bounces

Loops Campaign Email Sent

Trigger workflow when a Loops campaign email is sent

Loops Loop Email Sent

Trigger workflow when a Loops loop email is sent

Loops Transactional Email Sent

Trigger workflow when a Loops transactional email is sent

Agent templates

Ready-to-use templates featuring Loops. Click any to build it instantly.

Loops tools

13 Loops tools available to Sim agents.

Create Contact

Create a new contact in your Loops audience with an email address and optional properties like name, user group, and mailing list subscriptions.

Update Contact

Update an existing contact in Loops by email or userId. Creates a new contact if no match is found (upsert). Can update name, subscription status, user group, mailing lists, and custom properties.

Find Contact

Find a contact in Loops by email address or userId. Returns an array of matching contacts with all their properties including name, subscription status, user group, and mailing lists.

Delete Contact

Delete a contact from Loops by email address or userId. At least one identifier must be provided.

Send Transactional Email

Send a transactional email to a recipient using a Loops template. Supports dynamic data variables for personalization and optionally adds the recipient to your audience.

Send Event

Send an event to Loops to trigger automated email sequences for a contact. Identify the contact by email or userId and include optional event properties and mailing list changes.

List Mailing Lists

Retrieve all mailing lists from your Loops account. Returns each list with its ID, name, description, and public/private status.

List Transactional Emails

Retrieve a list of published transactional email templates from your Loops account. Returns each template with its ID, name, created/updated timestamps, and data variables.

Create Contact Property

Create a new custom contact property in your Loops account. The property name must be in camelCase format.

List Contact Properties

Retrieve a list of contact properties from your Loops account. Returns each property with its key, label, and data type. Can filter to show all properties or only custom ones.

Check Contact Suppression

Check whether a Loops contact is on the suppression list (bounced, complained, or unsubscribed) by email address or userId.

Remove Contact Suppression

Remove a Loops contact from the suppression list by email address or userId, allowing them to receive emails again. Subject to a team removal quota.

Get Transactional Email

Retrieve a single transactional email template from your Loops account by its ID, including its data variables and draft/published message IDs.

Frequently asked questions

Sim's Loops integration adds 13 tools and 8 triggers to the AI agents you build in Sim's visual workflow builder. Manage contacts and send emails with Loops.