The personal folders file, with a file extension of .PST, is used by various Microsoft interpersonal communication products, including Microsoft Exchange Client, Windows Messaging and all versions of Microsoft Outlook.
ແຟ້ມເອກະສານສ່ວນບຸກຄົນ, ມີເອກະສານຂະຫຍາຍຂອງ .PST, ຖືກ ນໍາ ໃຊ້ໂດຍຜະລິດຕະພັນສື່ສານຕ່າງໆຂອງ Microsoft, ລວມທັງ Microsoft Exchange Client, Windows Messaging ແລະທຸກລຸ້ນຂອງ Microsoft Outlook.