
1) Arrange by ZIP code 2) Bulk-mailing activity 3) Do a mailroom job 4) Do a wash-day chore 5) Do some advance organizing 6) Job for the mailroom 7) Ready a bulk mailing
Found on
https://www.crosswordclues.com/clue/presort

CPC offers discounts for those who prepare the mail for direct delivery to post offices or to carriers at post offices.
Found on
http://www.encyclo.co.uk/local/21134

To prepare mail for direct delivery to post offices or to carriers at post offices. The USPS offers discounts for those who prepare the mail for direct delivery to post offices or to carriers at post offices. Doing so requires the mailer to 'sort' and package the mail prior to putting it into the system.
Found on
http://www.nmoa.org/Library/index.htm

to sort (letters, packages, etc.) by zip code or class before collection or delivery to a post office.
Found on
https://www.infoplease.com/dictionary/presort
No exact match found.