Keep up professional relationships with this goodbye letter for the end of a contract position.
Dear {Recipient},
As my contract comes to a close this week, I would like to take the opportunity to express my pleasure in collaborating with {Company Name} on this project. You have an incredibly efficient, hard-working team who showed remarkable talent in {specific area(s)}.
I very much enjoyed working on {aspects of project} and I am quite pleased with the end result. I will be in touch over the next {period of time} to make sure that everything continues to work well, as per your specifications.
Please feel free to contact me any time if you have need for {subject} or {subject} work in the future at {contact information}. Thank you again for your business.
Sincerely,
{Sender}
