Dear :

Thank you for your order of [date]. We are pleased to inform you that all the merchandise you requested is in stock and has been shipped to you via [company] today.

In the future, all merchandise you order will be shipped within days. A % discount will be applied to your account if bills are paid within days of receipt of merchandise. In a year's time, this discount can add up to very substantial savings. If payment is not made within days, it will be due within days.

We look forward to a long and mutually beneficial relationship with your firm.

Sincerely yours,

[name]

[title]