The following table contains mappings between X.400 P2 attributes and MAPI properties, listed in alphabetical order. The name of the object appears in parentheses.

MH ID/Type	MAPI Property
IM_ACKNOWLEDGEMENT_MODE (OMP_O_IM_C_RECEIPT_NOTIF)	PR_ACKNOWLEDGEMENT_MODE35EI_HI
IM_APPLICATION_PROFILE (OMP_O_IM_C_ODA_BD_PRT)	Not mapped to a MAPI property.
IM_ARCHITECTURE_CLASS (OMP_O_IM_C_ODA_BD_PRT)	Not mapped to a MAPI property.
IM_AUTHORIZING_USERS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_AUTHORIZING_USERSDKD82B
IM_AUTO_FORWARD_COMMENT (OMP_O_IM_C_NON_RECEIPT_NOTIF)	PR_AUTO_FORWARD_COMMENT3ZLKV25
IM_AUTO_FORWARDED (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_AUTO_FORWARDED2AON3A
IM_BILATERAL_DATA (OMP_O_IM_C_BILAT_DEF_BD_PRT)	PR_ATTACH_DATA_BINLMSWCL
IM_BLIND_COPY_RECIPIENTS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_DISPLAY_BCC957U7N
IM_BODY (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_BODY6E9KHO
IM_BODY_PART_NUMBER (OMP_O_IM_C_USA_NAT_DEF_BD_PRT)	Not mapped to a MAPI property.
IM_CHAR_SET_REG (OMP_O_IM_C_GENERAL_TEXT_BD_PRT)	Not mapped to a MAPI property.
IM_CONVERSION_EITS (OMP_O_IM_C_INTERPERSONAL_NOTIF)	PR_CONVERSION_EITS4CCCYX2
IM_COPY_RECIPIENTS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_DISPLAY_CCNQSOAK
IM_DISCARD_REASON (OMP_O_IM_C_NON_RECEIPT_NOTIF)	PR_DISCARD_REASON49EI_QV
IM_ENVELOPE (OMP_O_IM_C_MESSAGE_BD_PRT)	Not mapped to a MAPI property.
IM_EXPIRY_TIME (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_EXPIRY_TIME12XBKZS
IM_EXTERNAL_DATA (OMP_O_IM_C_EXTERN_DEF_BD_PRT)	PR_ATTACH_DATA_BINLMSWCL, PR_ATTACH_FILENAME3BUU_NI, PR_ATTACH_TAGQVWTQO
IM_EXTERNAL_PARAMETERS (OMP_O_IM_C_EXTERN_DEF_BD_PRT)	PR_ATTACHMENT_X400_PARAMETERS__GBT8
IM_FORMAL_NAME (OMP_O_IM_C_OR_DESCRIPTOR)	Extract name using PR_ENTRYID2JH9H8T; for X.400 address types, build an OR Address from string address.
IM_FREE_FORM_NAME (OMP_O_IM_C_OR_DESCRIPTOR)	PR_SENDER_NAME_V.O03 for originator, PR_DISPLAY_NAME1KS30YA for recipient, or extract the display name using PR_SENDER_ENTRYID16DF3Y8
IM_G3_FAX_NBPS (OMP_O_IM_C_G3_FAX_BD_PRT)	Not mapped to a MAPI property.
IM_G4_CLASS_1_DOCUMENT (OMP_O_IM_C_G4_CLASS_1_BD_PRT)	Not mapped to a MAPI property.
IM_IMAGES (OMP_O_IM_C_G3_FAX_BD_PRT)	Not mapped to a MAPI property.
IM_IMPORTANCE (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_IMPORTANCE1F6XLH5
IM_INCOMPLETE_COPY (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_INCOMPLETE_COPYAE2D.
IM_IPM (OMP_O_IM_C_MESSAGE_BD_PRT)	Mapped to an IMessage3LEP_T6object embedded in the message.
IM_IPM_INTENDED_RECIPIENT (OMP_O_IM_C_INTERPERSONAL_NOTIF)	PR_ORIGINALLY_INTENDED_RECIPIENT_NAME5IOW.RR
IM_IPM_RETURN_REQUESTED (OMP_O_IM_C_OR_DESCRIPTOR)	PR_IPM_RETURN_REQUESTED4HITAH
IM_IPN_ORIGINATOR (OMP_O_IM_C_INTERPERSONAL_NOTIF)	PR_CALLBACK_TELEPHONE_NUMBER6ZWC8X, PR_SENDER_ADDRTYPE1K08047, PR_SENDER_EMAIL_ADDRESS181FCVX, PR_SENDER_ENTRYID16DF3Y8, PR_SENDER_NAME_V.O03, PR_SENDER_SEARCH_KEYWIQ1YS (and all PR_SENT_REPRESENTING_ *4A1LXGP properties)
IM_LANGUAGES (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_LANGUAGES333DUW4
IM_MIXED_MODE_DOCUMENT (OMP_O_IM_C_MIXED_MODE_BD_PRT)	Not mapped to a MAPI property.
IM_NATIONAL_DATA (OMP_O_IM_C_NATIONAL_DEF_BD_PRT)	Not mapped to a MAPI property.
IM_NON_RECEIPT_REASON (OMP_O_IM_C_NON_RECEIPT_NOTIF)	PR_NON_RECEIPT_REASON3OQ827K
IM_NOTIFICATION_REQUEST (OMP_O_IM_C_OR_DESCRIPTOR)	PR_NON_RECEIPT_NOTIFICATION_REQUESTED1.BKFM2, PR_READ_RECEIPT_REQUESTEDGYIX43
IM_OBSOLETED_IPMS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_OBSOLETED_IPMSM03S4P
IM_ODA_DOCUMENT (OMP_O_IM_C_ODA_BD_PRT)	Not mapped to a MAPI property.
IM_ORIGINATOR (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_CALLBACK_TELEPHONE_NUMBER6ZWC8X, PR_SENDER_ADDRTYPE1K08047, PR_SENDER_EMAIL_ADDRESS181FCVX, PR_SENDER_ENTRYID16DF3Y8, PR_SENDER_NAME_V.O03, PR_SENDER_SEARCH_KEYWIQ1YS (and all PR_SENT_REPRESENTING_*4A1LXGP properties)
IM_PRIMARY_RECIPIENTS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_DISPLAY_TONQSORW
IM_RECEIPT_TIME (OMP_O_IM_C_RECEIPT_NOTIF)	PR_RECEIPT_TIME50D_.CE
IM_RECIPIENT (OMP_O_IM_C_OR_DESCRIPTOR)	PR_ADDRTYPE7C7E4S, PR_DISPLAY_NAME1KS30YA, PR_EMAIL_ADDRESSJ.C5HA, PR_ENTRYID2JH9H8T, PR_OFFICE_LOCATION180GS8A, PR_PRIMARY_TELEPHONE_NUMBERFDV3W3, PR_SEARCH_KEY_7GFC6
IM_RELATED_IPMS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_RELATED_IPMS94I1G9
IM_REPERTOIRE (OMP_O_IM_C_IA5_TEXT_BD_PRT)	Not mapped to a MAPI property.
IM_REPERTOIRE (OMP_O_IM_C_ISO_6937_TEXT_BD_PRT)	Not mapped to a MAPI property.
IM_REPLIED_TO_IPM (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_PARENT_KEY6IGHRX
IM_REPLY_RECIPIENTS (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_REPLY_RECIPIENT_ENTRIES29H9_SU, PR_REPLY_RECIPIENT_NAMES5XF3.O
IM_REPLY_REQUESTED (OMP_O_IM_C_OR_DESCRIPTOR)	PR_REPLY_REQUESTEDPGFX_9
IM_REPLY_TIME (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_REPLY_TIME179H0TU
IM_RETURNED_IPM (OMP_O_IM_C_NON_RECEIPT_NOTIF)	(Object; no corresponding property)
IM_SENSITIVITY (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_SENSITIVITY18_E1UH
IM_SUBJECT (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_NORMALIZED_SUBJECT1DDH6NO, PR_SUBJECT2EJ7_LA, PR_SUBJECT_PREFIXR2JYMG
IM_SUBJECT_IPM (OMP_O_IM_C_INTERPERSONAL_NOTIF)	PR_ORIGINAL_SEARCH_KEYISWYB0
IM_SUPPLEMENTARY_RECEIPT_INFO (OMP_O_IM_C_RECEIPT_NOTIF)	PR_REPORT_TEXT3H_3_Z8
IM_TELEPHONE_NUMBER (OMP_O_IM_C_OR_DESCRIPTOR)	PR_CALLBACK_TELEPHONE_NUMBER6ZWC8X for Originator, PR_PRIMARY_TELEPHONE_NUMBERFDV3W3 for Recipient
IM_TELETEX_COMPATIBLE (OMP_O_IM_C_TELETEX_BD_PRT)	Not mapped to a MAPI property.
IM_TELETEX_DOCUMENT (OMP_O_IM_C_TELETEX_BD_PRT)	PR_BODY6E9KHO
IM_TELETEX_NBPS (OMP_O_IM_C_TELETEX_BD_PRT)	Not mapped to a MAPI property.
IM_TEXT (OMP_O_IM_C_GENERAL_TEXT_BD_PRT)	Not mapped to a MAPI property.
IM_TEXT (OMP_O_IM_C_IA5_TEXT_BD_PRT)	PR_BODY6E9KHO
IM_TEXT (OMP_O_IM_C_ISO_6937_TEXT_BD_PRT)	PR_ATTACH_DATA_BINLMSWCL
IM_THIS_IPM (OMP_O_IM_C_INTERPERSONAL_MSG)	PR_SEARCH_KEY_7GFC6
IM_UNIDENTIFIED_DATA (OMP_O_IM_C_UNIDENTIFIED_BD_PRT)	Not mapped to a MAPI property.
IM_UNIDENTIFIED_TAG (OMP_O_IM_C_UNIDENTIFIED_BD_PRT)	Not mapped to a MAPI property.
IM_USA_DATA (OMP_O_IM_C_USA_NAT_DEF_BD_PRT)	Not mapped to a MAPI property.
IM_USER, IM_USER_RELATIVE_IDENTIFIER (OMP_O_IM_C_IPM_IDENTIFIER)	Construct a GUID from IM_USER_RELATIVE_IDENTIFIER
IM_VIDEOTEX_DATA (OMP_O_IM_C_VIDEOTEX_BD_PRT)	Not mapped to a MAPI property.
IM_VIDEOTEX_SYNTAX (OMP_O_IM_C_VIDEOTEX_BD_PRT)	Not mapped to a MAPI property.