You will probably send this letter directly to the employee's superior with a copy for the employee. Be specific about what the employee did that you appreciated.

I am writing to express my appreciation for the help John Doe gave us in our consolidation efforts.

We have thoroughly enjoyed our relationship with your company, especially because your customer service representative, John Doe, has been so helpful.

Your representative, Jane Doe, is to be commended for her outstanding work on your last project.

We want you to know how impressed we were with the way Jane Doe handled the delinquent accounts.

During a recent internal audit, John Doe found a rather large discrepancy in our financial records. Had he not found that error, our corporation could have faced heavy legal fees.

I want to tell you how pleased I am with the landscaping plan your new intern prepared for me.

a very helpful attitude
among the finest I've seen
by your co-workers
commendations and congratulations
convey my appreciation to
exceptional work done by
express my appreciation for
has been extremely helpful
have thoroughly enjoyed
have been deeply impressed
have come to admire
how pleased we have been
how impressed we were
how highly we think of his efforts
how much we appreciate
how pleased I am
is to be commended for
please accept
received exceptional service
want to let you know
with the services of

His attention to detail helped our work move smoothly, without a single legal snag.

His broad knowledge of the machinery has helped our trouble shooters keep the assembly line moving during the periods of heaviest demand.

Her public relations skills helped us collect on most of the accounts that others had given up on. We hope she will be available for future cooperation.

We commend his attention to detail. He is the most thorough accountant we have had work on our books.

She has a good sense for balance, with the right mix of colors and textures.

a pleasure to work with
an excellent sense of
attention to detail
broad knowledge of
consistently gone out of her way to
courteous, well-trained staff
dependable and thoughtful
diligence and skill
efficiently and with good humor
going the extra mile
has helped us to
intelligent and cooperative
made sure everything ran smoothly
never-failing professionalism
one of your company's greatest assets
particularly astute in
professional and courteous
public relations skills
stays calm under pressure
the time and thought he put into
took care of all the details
took the trouble to
went out of his way to
willingness to help

Thanks again for assigning him to work with us. Best wishes for the future.

We send our warm regards and wish you continued success.

We wish you similar successes with your other clients.

Please convey our appreciation to Jane for a job well done. We hope we can work together again.

May your future endeavors be as successful as this one has been.

You are fortunate to have Jane as an employee. Best wishes to her and the rest of you at Doe Corporation.

are looking forward to
best wishes for
congratulations on your
continue your tradition of
convey my compliments to
how much we appreciate
keep up the good work
one of your greatest assets
our sincere thanks and appreciation
our warmest regards
please let everyone involved know
please pass my appreciation on to
please thank him for us
thank you for
thanks to the efficiency of
want you to know
will assure the continued success of
wish you continued success
working together again
would like to thank her for

I want you to know you have an exceptional employee, Jane Doe, in your support division. Her calm, patient manner was a great help to me when my frustration was at an all-time high. Her knowledge of the software and her remarkable problem-solving abilities are rare indeed. If the quality of a firm's employees is an indication of future success, then Doe Corporation has a very bright future.

I am writing to thank you for the training seminar you arranged, and to especially thank you for sending Mr. Doe to be our primary instructor. He did his homework well, and was more aware of our needs than any of our previous instructors. We appreciate the time he took to study samples of our work in advance so his comments were immediately applicable. We would welcome his instruction again. Please convey our thanks to Mr. Doe.

As manager of our computer department, I commend your employee, John Doe, for the prompt and courteous service he gave us last week. He determined our cable needs and produced a fair written estimate very quickly. Once he started the work, he stayed on location until he had installed all additional computers. You can be certain that we shall ask for him personally to serve our future needs.

I wish to commend your receptionist, Jane Doe, for the way she handled our problem yesterday. She was courteous and friendly as she made half a dozen telephone calls on my behalf, not giving up until she had traced the missing shipment. Such professionalism is rare nowadays. Ms. Doe is an asset to your organization and is part of the reason I look forward to doing business with you again in the future.