JUMP TOPostGrid Address Verification APIGet Lookup InfogetVerify a Freeform AddresspostGet Autocomplete PreviewsgetAutocomplete an AddresspostBatch Verify AddressespostVerify a Structured AddresspostSuggest AddressespostParse an AddresspostLookup City/State from Postal or ZIP CodepostPostGrid International Address Verification APIVerify a Freeform AddresspostVerify a Structured AddresspostBatch Verify AddressespostGet Autocomplete PreviewsgetGet Autocomplete Advanced PreviewsgetAutocomplete an AddresspostPostGrid Print & Mail APIBoxesCreate BoxpostList BoxesgetGet BoxgetCancel BoxdeleteSelf MailersCreate Self MailerpostList Self MailersgetGet Self MailergetCancel Self MailerdeleteGet Self Mailer PreviewgetPowered by Get Self Mailerget https://api.postgrid.com/print-mail/v1/self-mailers/{id}Retrieve a self-mailer by ID.