Dear valued customer,
We just wanted to take a moment to recognize and celebrate your anniversary with our company. It has been [X] years since you first joined us and we couldn't be more grateful for your continued loyalty.
We know that you have a choice when it comes to your business needs, and we are so grateful that you have chosen to work with us. It has been a pleasure serving you and we look forward to many more years of partnership.
As a small token of our appreciation, we would like to offer you [X]% off your next purchase with us. We hope this will help make your anniversary even more special.
Thank you for your business and for being a valued member of our community. Here's to many more years of success together!
Sincerely,
[Your name]