Auto-enroll Typeform signups into Google Groups and send a welcome

Build me a webhook-triggered agent workflow that auto-enrolls new community signups into the right Google Groups discussion lists and sends them a personalized welcome email from Gmail.

Trigger: a Typeform outgoing webhook on my community signup form. The webhook payload contains the response inline, including the respondent's email and a multi-select interest field with topic tags like ai-builders, product-managers, founders, designers. Use the webhook trigger type and let me wire the URL into Typeform when the workflow is created.

What the agent should do on each new response:

1. Read the respondent's email and the list of interest tags they selected from the webhook payload.

2. Call Google Groups List Groups to fetch the real groups available in my workspace. Build a mapping from each interest tag to a matching group (use the group's name, description, or email-local-part to match the tag). Never invent groups that do not exist. If an interest has no clear match, skip that interest rather than guessing.

3. For every matched group, call Google Groups Create Membership to add the respondent's email as a MEMBER. If Google Groups returns an already-exists error for a particular group, treat it as success and continue. Collect the list of groups the person was actually enrolled in (including the ones they were already in).

4. Draft and send a personalized welcome email via Gmail Send a Message to the respondent's address. The email should: greet them by their first name if available, name the specific groups they were just added to, set expectations on traffic (rough volume) and posting etiquette for each group, and include a link to a self-serve unsubscribe and preferences doc. Ask me for the doc URL and the sender display name during the build.

Edge cases and rules: refuse to fabricate groups; if zero interests match any real group, still send a friendly welcome email explaining no lists matched and inviting them to reply with what they're looking for, but do not invent enrollments. If the respondent's email is missing from the payload, stop and log a clear error rather than guessing. Treat already-a-member responses as a no-op success.

Integrations to use: Typeform (webhook trigger only, no read calls needed since the payload is inline), Google Groups (List Groups and Create Membership), Gmail (Send a Message). One workflow, one trigger, agent-based.