Turn Gravity Forms event registrations into calendar invites and confirmations

Build a deterministic code workflow that turns new Gravity Forms event registrations into Google Calendar invites and Gmail confirmation emails. No reasoning required — every field maps one-to-one.

Trigger: a cron that fires every 15 minutes.

Step 1 — Pull new registrations from Gravity Forms. Call the "List Entries by Form" operation against my event/webinar registration form (the form ID should be a workflow input). Use a search filter on date_created so only entries created since the last successful run are returned. Persist the last-processed timestamp in workflow state so each run starts from where the last one left off. Page through results if there are more than one page worth.

Step 2 — For each new entry, read the structured fields by field ID: attendee name, attendee email, the chosen session date and time (stored in a form field — assume it's a single combined start datetime, with end derived by adding the event duration which is also an input), the event name, and the join URL (stored in an admin-only form field). Be defensive about Gravity Forms' field ID format (e.g. "1.3" sub-fields for Name).

Step 3 — Call Google Calendar "Create Event" on a shared events calendar (calendar ID is a workflow input). Set the event title to "[Event name] — [Attendee name]", start and end times from the form field, add the attendee as an invitee on the event so Google sends them the native calendar invite, and put the join URL in the event description and (if available) the conferencing/location field.

Step 4 — Call Gmail "Send a Message" to the attendee from the connected Gmail account. Subject should be "You're registered for [Event name]". Body should include the event title, the date and time in a human-readable format, the calendar event link returned by Google Calendar in step 3, and the join URL from the form. Keep the email plain and brand-neutral — the user will customize the copy later.

Step 5 — Mark the entry as processed. Update the last-processed timestamp in workflow state to the max date_created across this batch so the next run only pulls entries after it. If a single entry fails (bad email, missing date), log it, skip that entry, and continue the batch — do not block the rest of the registrations.

Workflow inputs to expose: Gravity Forms form ID, Google Calendar ID, event duration in minutes, the field IDs for attendee name, attendee email, session start datetime, event name, and join URL. Default the duration to 60 minutes.

This is a pure code workflow — no LLM reasoning steps. Every field maps directly from the Gravity Forms entry to the calendar event and the confirmation email.