Hello [Name],

Hope you're enjoying [something seasonally relevant]! Just swinging by your mailbox to say a huge thanks for being part of our business. In this bustling market, your support's been like a lighthouse guiding us through. We're all about making real estate a breeze for our clients, and friends like you make it possible. Got pals mulling over a move? Point them my way – I'd love to help. Let's catch up over coffee soon!

Cheers, [Your Name]