Thank You Letter Format For Business Opportunity And Association

[Insert company or personal letterhead, or type your name and address]

January 7, 2016

[Mr/Ms] [First Name] X. [Last Name]

[Position]

[Company]

[Department]

[Division]

[Address 1]

[Address 2]

[City], [St/Prov], [Country]  [ZIP/POSTAL]

[Salutation]

It's now [how long the reader has been your customer] since we started working together, and I would like you to know that we at [your own company] truly appreciate your business. I hope we can continue to be productive partners long into the future.

If my colleagues and I can do anything for you at [Company], please phone me at [your phone number]. I will talk to you again soon.

Sincerely,

[Your Name]

[Your Position]

[Notations for Enclosures, cc:, etc.]