Writing thank you letters

Everyone likes to receive thanks for their help and support, and colleagues also appreciate being thanked in writing. You might want to thank someone for helping you with a project, donating their time or for sharing their expertise.

Thank you letter samples:

I just wanted to write and thank you for your help in / with / at…
This is just a quick email to show my appreciation for your support.
I just wanted to let you know that your help has been invaluable.
I really appreciate(d) your contribution to…
Many thanks for your help in / with / at…
Thank you so much for helping me with…