[Your letterhead, if desired; if not, your return address]
[Date of letter-month, day, and year]
[Recipient's first and last names]
[Street or P.O. box address]
[City, State ZIP code]
Dear [recipient's name]:
We have some exciting news to share with you today. We would like to invite you to participate in a special sales promotional event, which will be taking place this month. From October 8 through the 22nd, we will be holding our annual inventory clearance sale. Even better, you are invited, and when you check out this special event, you will enjoy savings of up to 40%. You will not only enjoy these special savings, but also food and special activities for the whole family.
Please see the enclosed flyer for all of the details, and call us if you have any questions before the big event. We hope you will accept this invitation to participate in this stellar, one-of-a-kind event!
[Sender's first and last names]