All outgoing university mail must have a return address and departmental index code clearly placed in the upper left corner of the envelope. The departmental index code allows ISU Mail Services to bill the mailing to the proper department.
Mail Services can seal regular envelopes during the metering process, all large envelopes or envelopes with flaps at the end must be sealed by the department.
Make sure all outgoing mail has a complete address including a zip code. Also, make sure international mail has the name of the country clearly printed in English, and all capital letters.
Indicate the type of service required on the mail, especially non-letter mail, large envelopes, or packages. Mail weighing less than 11 ounces will be sent FIRST CLASS. Mail weighing over that will be sent third/fourth class unless otherwise indicated. All international letter mail will go AIR MAIL unless otherwise indicated.
All university outgoing mail requiring postage should be separated from pre-stamped and campus mail.
Mail not received during morning pick-up and delivery may be brought to Mail Services by 3:00 p.m. if it is to go out the same day. All outgoing mail is taken to the US Postal Service daily at 3:30 p.m..