Envelopes will conform to USPS requirements. Borders, markings, slogans, emblems, or designs will not be printed on mailing envelopes except when specifically approved by GSA and when in conformity with postal laws and regulations. Names and titles of officials and names of offices are not permitted in the office return address. B. Blue Envelopes. The sender's name and organization code will be provided in the upper left-hand corner.
Blue envelopes are to be opened only by the individual or office addressed.
During a named recipient's absence, the supervisor may open the envelope to determine the proper action needed. C. Messenger Service Envelopes. An office must obtain a license to use penalty postage meters by submitting Form 3601-A to the post office where their meters are set. When the license is no longer required, it will be canceled by the mail facility office for which the meter was obtained. D-7924 will be notified of license numbers being obtained or canceled.