[DATE, ex. Monday, March 31, 2008]

[NAME, COMPANY AND ADDRESS, ex.
Link Building
XYZ Inc.
1234 First Street
Suite 567
Anycity, Anystate  85245]

Dear [NAME, ex. Link Building],

As you may know, [FIRM NAME, ex. ABC Co.] will be closing its business on [DATE, ex. June 30].

I am writing to thank you for your business with us during the past [DURATION, ex. five years.]  Indeed, it has been a pleasure to serve you.  Please call me if there is anything I can do for you before the date of closure.

Sincerely,

[YOUR NAME, ex. Jill Jones]