You can send postcards to all of your customers with ease. But first you need to get to the Postcards section of your account. 

Click 'My Apps' at the top of your screen.
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Then click on the '+ Postcard Campaign' button.

Select 'One-time Blast.'

Then follow the steps below:

1- Select or upload an image for the front

2- Enter your personalized message on the back of the card

Edit

3- Select the Customers you would like the postcard sent to

4- Name your campaign and click preview to review your order

5- Review your card to make sure everything looks correct, then click Send Postcards and you're all set!!

Want to know if postcard marketing is still effective?