Postcards must be rectangular to qualify for First-Class Mail prices.
Oversized postcards will be charged as a letter or large envelope.
Minimum Height: 3 1/2" Maximum Height: 6”
Minimum Length: 5" Maximum Length: 9”
Minimum Thickness: 0.007" Maximum Thickness: 0.016"
Standard Sized Envelopes
Envelopes must be rectangular to qualify for letter prices.
Minimum Height: 3 1/2" Maximum Height: 6 1/8"
Minimum Length: 5" Maximum Length: 11 1/2"
Minimum Thickness: 0.007" Maximum Thickness: 1/4"
Non-standard mail, like square or vertical envelopes, lumpy or rigid envelopes, or mail with clasps, strings or buttons, cannot use our automated processing machines. Hand-canceled mail is charged a non-machineable surcharge.
Large envelopes must be rectangular to qualify for flat pricing.
Large envelopes that exceed size requirements of a flat will be charged package prices.
Maximum Height: 12"
Maximum Length: 15"
Maximum Thickness: 3/4"
Packages can be sent using Priority Mail Express, Priority Mail, First-Class Package Service-Retail and Package Services.
Contents must not weigh more than 70 pounds. Lower weight limits may apply.
When you mail a package, choose a sturdy box with enough room for cushioning material around the contents to protect fragile items and prevent items from shifting.
Tape your box shut and reinforce the seams with two-inch wide packing tape. Do not use cord, string or twine because it gets caught in the mail processing equipment.
This is a partial list so please call for more information.
Mail delivered to your department, addressed to a staff member who has left the department, should be forwarded as needed, by your department if the new address is known. First Class mail is forwarded free of charge for one year. When forwarding such mail, you should draw a line through the incorrect address, insert the correct new address, band separately and return the mail to Campus Mail Services. If you do not have a forwarding address for the staff member, mark on the face of the envelope “Moved-No-Forward” and return to Campus Mail Services.
Periodical mail (magazines, newspapers, etc.) is forwarded for 60 days free of charge.
Standard mail may not be forwarded; however, if an ancillary endorsement (i.e. Address, Forwarding, Return or Change Service Requested) is written on the item you should return the item to Campus Mail Services.
An official change-of-address form cannot be left by a staff member or student at the DeKalb Post Office or at Campus Mail Services for the purpose of re-directing mail. A form can be left with Campus Mail Services for reference purposes only.
Any mail received at Campus Mail Services which does not have postage affixed and/or has no accompanying postage charge slips will be returned to the sender. If such mail does not have a return address, it will be sent to the dead letter office, as postal regulations prohibit sending this type of mail postage due.
The following types of non-U.S. stamped mail cannot be accepted for processing by Campus Mail Services:
If the above guidelines are met organizations of university employees may utilize Campus Mail Services for campus deliveries without affixing U.S. mail postage subject to the following rules:
For information on postal rates for various classes of mail or current fees for special services and handling, contact Campus Mail Services at 815-753-6286.
To be processed without delay, incoming mail from correspondents must use the following format:
Your Full Name
Your Full Department Name
Northern Illinois University
1425 W. Lincoln Highway
DeKalb, IL 60115-2828
The same information must be used in the return address for outgoing university mail.
To be processed without delay, incoming mail from correspondents must use the following format:
Your Full Name
Your Hall Name & Room Number
Your Hall Street Address
DeKalb, IL 60115-2828
For more information on student mail, visit the Housing and Residential Services website.
Print complete and correct addresses clearly in capital letters with a pen or permanent marker or use typed mailing labels.
Do not use commas or periods.
Include the ZIP Code™+4 whenever possible.
Mark the package "Fragile" or "Perishable" when appropriate.
If you’re reusing a box, make sure all other addresses – and barcodes, if applicable – are covered or blacked out.
For your Return Address, please use the same address format as you use for your incoming mail.
Monday-Friday
10 a.m.-noon and 1-3 p.m.
Closed on USPS holidays due to low mail volume