The default setting for all Mailform orders is to print double sided (duplex) 

Mailform allows for the option of printing single sided at an additional cost. This can be useful for printing media or shipping labels. 

Mailform can do a fair amount, but we do have some limitations:

• The maximum number of sheets  in a Certified Mail Flat envelope is 47 (cut this number in half for single sided orders)

• The maximum number of sheets  in a First Class Mail order is 28 (cut this number in half for single sided orders)

• The maximum number of sheets in a Priority Mail envelope is 100 (cut this number in half for single sided orders)

• The maximum number of sheets in a Priority Mail Express envelope is 50 (cut this number in half for single sided orders)

Please keep in mind , First class and Priority orders greater than the above limits will be automatically upgraded to Flat Rate and Priority Mail Boxes with a sheet limit of 750 and 1250 respectively.