Before you send the letters you just printed, review the letters and
envelopes to make sure that everything printed correctly. Confirm that there
are no occurrences of **MISSING* INFORMATION** in any of the letters. If you're using envelopes with windows, also check that the addresses display correctly.
If there are any problems, edit the letter template and
adjust the content, fields, and envelope settings as needed.
Inserting fields into QuickBooks letter