[Your letterhead, if desired; if not, your return address]

[Date of letter-month, day, and year]

[Recipient's first and last names]
[Company name]
[Street or P.O. box address]
[City, State ZIP code]

Dear [recipient's name]:

We at Paws for Paws were so honored to receive your contribution to our pet rescue organization, and we thank you so very much for helping in our efforts to provide foster care for dogs and cats. Your donation will help us provide food, bedding materials, health care, and other essential assistance for the pets we shelter.

Keep in mind that your contribution is tax deductible, and we will be sending a receipt for tax purposes. Thank you again for helping needy pets in our community.

Sincerely,

[Signature]

[Sender's first and last names]