Postal Abbreviations

1	56 APO	1st CBPO
2	99 APO	2nd CBPO
3	APO	Army Post Office
4	APPU	Asian Pacific Postal Union
5	AMPC	Automatic Mail Processing Centre
6	CBPO	Centrally Based Post office
7	CPMG	Chief Postmaster General
8	CO	Circle Office
9	CSD	Circle Stamps Depot
10	CRC	Computerized Registration Centre
11	ECS	Electronic Clearance Service
12	EFT	Electronic Fund Transfer
13	eMO	electronic Money Order
14	ePOST	electronic Post
15	ESMO	Electronic Satellite Money Order
16	eVPP	electronic Value Payable Parcel
17	EMS	Express Mail Service
18	EPP	Express Parcel Post
19	FPO	Field Post Office
20	GPO	General Post Office
21	HPO	Head Post Office
22	ISP	India Security Press (Nasik)
23	IVP	Indira Vikas Patra
24	ILC	Inland Letter Card
25	IMO	Instant Money Order
26	IFSMO	International Financial System Money Order
27	IMT	International Money Transfer
28	KVP	Kisan Vikas Patra
29	MSY	Mahila Samridhi Yojana
30	MO	Money Order
31	MDG	Mukhya Dak Ghar
32	NSC	National Savings Certificate
33	PRSS	Pay Roll Savings Scheme
34	PIN	Postal Index Number
35	PLI	Postal Life Insurance
36	PSD	Postal Stores Depot
37	PTC	Postal Training Centre
38	PMG	Postmaster General
39	PCO	Public Call Office
40	PPF	Public Provident Fund
41	RMS	Railway Mail Service
42	RO	Regional Office
43	RL	Registered Letter
44	RLO	Returned Letter Office
45	RPLI	Rural Postal Life Insurance
46	SBCO	Savings Bank Control Organisation
47	SPA	Speed Post Article
48	SRO	Sub Record Office/ Sub Record Officer
49	TMO	Telegraphic Money Order
50	UPU	Universal Postal Union
51	VPL	Value Payable Letter
52	VPP	Value Payable Parcel
53	V-SAT	Very-Small Aperture Terminal

source : saparavur.blogspot.in