Hi {{Name}},

We're sending you this email to wish you a very happy birthday and to let you know how much we appreciate working with you.

You are an amazing partner and a true professional. You always deliver high-quality work, meet deadlines, and exceed expectations. You are also a great communicator, a team player, and a problem solver.

We are lucky to have you as our partner and we look forward to many more successful projects together.

As a token of our appreciation, we have written a glowing testimonial for you that you can use on your website, social media, or portfolio. You can find it attached to this email.

We hope you have a wonderful birthday and a fantastic year ahead.

Cheers,

[Your Company]