1. Express your thanks and gratitude.
  2. Go into detail as to how he or she has helped you with the matter at hand.
  3. Reiterate your thanks and end on a positive note.


[Senders Name]
[Address line]
[State, ZIP Code]

[Letter Date]

[Recipients Name]
[Address line]
[State, ZIP Code]

[Subject: Normally bold, summarizes the intention of the letter] -Optional-

Dear [Recipients Name],

I am writing to tell you how much I appreciate all of the help that you have given me this past month with my project.

Your knowledge and expertise have helped me complete my research, and the time I spent at your lab certainly gave me great new insights and ideas.

Again, I thank you sincerely for everything that you have taught and helped me.


[Senders Name]
[Senders Title] -Optional-

[Enclosures: number] - Optional -
cc: [Name of copy recipient] - Optional -

Letter of appreciation or thank you. Sample letter.

Further things to consider when writing appreciation letters to colleagues

Appreciation Letters

Appreciation letters are a professional means of communication to express thanks and gratitude towards people for their good deeds. The main purpose of appreciation letters is to sincerely recognize what people have done for you and their positive impact on your work life. Appreciation letters encourage the recipient to work harder and give better results than before. There are endless instances when you can express your appreciation to other people through a letter. Maybe your mentor has provided you with advice on how to go about a project; your manager has made you new connections or a supervisor has recommended you for a promotion; perhaps a colleague has helped you handle a difficult task. An appreciation letter will be a great way to say thank you.

When writing appreciation letters, make sure to express your gratitude in the beginning for the recipient to understand the intention of your letter. Pinpoint specific actions as well as their direct results. Be sure to include what you are sincerely grateful for and why. Keep your letter professional, polite, and to the point. Try to send the letters as soon as possible, when the events are still fresh in both parties' minds.

Letters to Colleagues

Letters to colleagues are, simply, letters written to coworkers. These letters are written in a business or professional setting for different purposes. Maybe you want to thank a coworker for doing you a favor - write a thank-you letter. You want to congratulate him/her for a promotion - write a congratulation letter. Perhaps you want to apologize for doing something wrong - write an apology letter, or may be you have found a new job, and it's time to say goodbye - write a farewell letter. Although some colleagues may find writing letters a tedious process, it is a great way to maintain a strong working relationship.

Most letters to colleagues are informal. You really don't need to use all that formal jargon to people you know pretty well ? do you? Begin your letter with a warm and friendly salutation and the proper name of the recipient. Clearly state the purpose of your letter. Be specific and know exactly what you are talking about. Use clear language which the recipient can easily understand. Maintain a friendly and pleasant tone. Close the letter positively and with a note of anticipation that the recipient will take the necessary action.

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