The New Yorker offers excellent example of end-of-renewal series letter.

Without sweetening the pot at the end of its renewal series, The New Yorker magazine does get an about-to-expire subscriber's attention with a short note that's "as simple as 1, 2, 3." It's worth adding to your swipe file.

Dear Subscriber:

We have no idea what's been holding you back from responding to our notices about your subscription expiring. But it's very important that we hear from you quickly.

So here are three exercises we hope will inspire you to immediate action. It's as simple as 1, 2, 3.

1. Please look at any issue of The New Yorker you have handy. How can you bear to do without it?

2. Please look at the address label on your copy. You'll see a code line above your name that ends with the date of the very last issue we can send you. Close, isn't it?

3. Please look at the enclosed renewal form. Fix your eyes on those figures that show how little you pay and how much you save with your subscriber discount rates. The one-year deal is a beauty all right--but the two-year offer is an absolute bonanza. How can you afford NOT to seize this opportunity?

Please note, too, that you need not write a check now, unless you prefer to. We'll be glad to charge your credit card if you'll just fill in the essential information....