[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],

We thank you for your business.  Enclosed, please find your check (#[CHECK NUMBER]), in the amount of $[AMOUNT].  Unfortunately, your bank was unable to process this check due to insufficient funds.  As I am certain that this due to a small bank oversight, please contact me at XXX-XXXX to tell me how to proceed.

Sincerely,

[YOUR NAME, ex. Jill Jones]