Send timezone-aware drip emails with Gmail and Google Sheets using daily limits

How it works - Three scheduled triggers fire on weekdays at region-appropriate working hours: EU/UK at 10:00 UTC, North America at 18:00 UTC, and Australia at 01:00 UTC - All three feed one shared pipeline, so there is no duplicated logic across regions - A code node detects the active region from the current UTC hour and picks a daily send limit (45 / 90 / 15 by default) - Reads your contact list from Google Sheets, filters by country-to-region mapping, skips rows already marked sent, and caps at the daily limit - Sends a personalised email via Gmail using expressions like {{ $json'First Name' }} and {{ $json'Company' }} - Writes success or error status back to the same row (emailsent, sentdate, status, groupsent, errormsg) - No Wait nodes, no long-running executions - timing is driven entirely by Cron schedules Set up steps - Setup takes about 10-15 minutes - Connect a Google Sheets OAuth2 credential with read + write access to your contacts sheet - Connect a Gmail OAuth2 credential for the sending account - Create a Google Sheet with these columns: First Name, Company, Email, Country, emailsent, sentdate, status, groupsent, errormsg - In all three Google Sheets nodes, select your spreadsheet and the contacts tab - Open the Build Email node and replace the placeholder subject and HTML body with your own copy - In the Send Gmail node, set senderName to your display name - Optional: adjust daily send caps inside Determine Group and edit the country-to-region lookup inside Filter and Limit - Detailed per-step notes live inside the workflow as sticky notes