how to make postcard mailing using microsoft word

1. In the Labels dialog, click Options (how you arrive at the dialog will depend on what version of Word you're using).
2. In the Label Options dialog, select Avery Standard.
3. Scroll down to Avery stock number 3263 - Post Card and select it.
4. Click OK.
5. Click New Document.
6. The document will be laid out as a 2 x 2 table, so make sure you have table gridlines displayed so you can see the cell boundaries.
7. Set up one cell as desired for a single postcard.
8. Select the cell and Copy.
9. Select the table and Paste; this will paste the copied content into each of the four cards.
10. Print as many copies as required on one side of the cards.
11. Follow the same process to create another document for the reverse side and print it to the other side of the cards.

If by "mailing," you mean you want to create a mail merge, then the process is similar except that you will use the Mail Merge Helper or Mail Merge Wizard to insert static text and merge fields in your postcards. As long as you need only a return address on the reverse, you'll be fine; where you would come to grief would be in trying to match up, say, personalized messages on one side with individual addresses on the reverse side.