Hi Jason, I was tasked by a client to do the exact same thing and thought I'd share the solution. You're on the right track with using Zapier. The trick is to store newsletter subscribers using Google Drive (which creates a Google Sheet) and then use Zapier to connect Google Sheets to your clients' Agile CRM account. If you are only planning to use Zapier for this purpose and anticipate less than 100 new contacts/month, your Zapier subscription is free. Hope this helps! All the best.