Postal Officer Appointment and Training - S-1 Procedural Page

Role and responsibility

The unit commander appoints the Postal Officer in writing per MCO 5110.4BMCO 5110.4B. The Postal Officer holds MOS 0161 qualification or equivalent training. The S-1 chief tracks the Postal Officer appointment file and the postal training posture. The S-1 officer signs by direction on the routing of the appointment letter. The Postal Officer trains unit mail room personnel and provides continuing postal training.

Source documents flow from the candidate's MOS qualification, the prior postal experience record, the formal MOS 0161 school certificate, the appointment letter format, the postal training cycle, and the recertification record. Postal Officer outputs include the signed appointment letter, the training completion record, the unit mail room personnel training record, the annual recertification, the appointment file retention per records schedule, and the audit trail.

Per MCO 5110.4B, the Postal Officer holds responsibility for the unit postal operations including unit mail room oversight, registered and certified mail handling, official mail management, and postal inspection coordination. The DoDI 4525.09 framework requires trained postal personnel at every MPO and FPO.

Trigger events

• New Postal Officer appointment required at unit standup or PCS.
• Annual postal recertification cycle.
• Change of command triggers appointment refresh.
• MOS 0161 school graduation triggers candidate availability.
• DoDI 4525.09 update triggers training update.

Processing workflow

1. Identify the Postal Officer candidate. The unit commander identifies the candidate from MOS 0161 personnel or trained equivalent.
2. Verify MOS qualification and experience. Per MCO 5110.4BMCO 5110.4B, the candidate holds MOS 0161 or equivalent qualification.
3. Cut the Postal Officer appointment letter. Per MCO 5110.4B, the unit commander signs the appointment letter in writing.
4. Schedule postal training. Per MCO 5110.4B and DoDI 4525.09DODI 4525.09, postal training completes before duty assumption.
5. Coordinate MOS 0161 formal school pipeline. Per the Marine Corps formal school pipeline, MOS 0161 training runs through the formal school.
6. Run unit-level postal training. The Postal Officer trains unit mail room personnel on USPS rules, accountability, and security.
7. Process annual postal recertification. Per MCO 5110.4B, annual recertification supports continuing qualification.
8. Refresh appointment on change of command or PCS. The new commander reviews and re-signs the appointment letter.
9. Maintain appointment file per records retention. Per SECNAV M 5210.1, retain the appointment file.
10. Audit postal training posture annually. The S-1 chief audits the training posture against the unit roster.

Systems of record and forms

Systems

• Postal Officer Appointment File. Local file holding the appointment letter and training records.
• MOS 0161 Training Pipeline Records. Per the formal school.
• Annual Postal Recertification Records. Per MCO 5110.4B.
• Records Retention File. Per SECNAV M 5210.1.

Forms

• Postal Officer Appointment Letter. Per MCO 5110.4B.
• Postal Training Completion Certificate. Per MCO 5110.4B and the formal school.
• Annual Recertification Memorandum. Per MCO 5110.4B.

Common pitfalls

• Postal Officer not appointed in writing. Per MCO 5110.4BMCO 5110.4B, the appointment runs in writing.
• Postal Officer without MOS 0161 qualification. Per MCO 5110.4B, the qualification supports the appointment.
• Postal training skipped before duty assumption. Per MCO 5110.4B and DoDI 4525.09DODI 4525.09, training completes before duty.
• Annual recertification missed. Per MCO 5110.4B, the cycle supports continuing qualification.
• Appointment file not retained. Per SECNAV M 5210.1, the file retains.
• Unit mail room personnel untrained. The Postal Officer trains unit mail room personnel.

Decision points

• MOS 0161 versus trained equivalent. Per MCO 5110.4B, the qualification flows from MOS 0161 or equivalent training. The unit assigns based on personnel availability.
• Training pipeline timing. The MOS 0161 formal school drives the pipeline. Local training fills gaps.
• Recertification scope. Per MCO 5110.4B, the annual recertification covers USPS rule updates, DoDI 4525.09 changes, and unit-specific posture.

Authority

This sub-page sits under MCO 5110.4BMCO 5110.4B Marine Corps Postal Affairs and Official Mail Program. DoDI 4525.09DODI 4525.09 covers DoD postal training framework. NAVMC 3500.3E covers T-R event coding. SECNAV M 5210.1 covers retention.

Related references

• MCO 5110.4B. Marine Corps postal affairs.
• DoDI 4525.09. DoD Military Postal Service.
• NAVMC 3500.3E. T-R event 0102-GENA-1008.
• SECNAV M 5210.1. Retention.