Post Office Protocol (POP) yog tus qauv hauv internet uas ua rau nws muaj peev xwm rub tawm cov ntawv xa email los ntawm email rau lub computer. POP tau hloov kho ob zaug txij li nws keeb kwm hauv xyoo 1984 ua POP1. Post Office Protocol Version 2 (POP2) tau luam tawm xyoo 1985. Post Office Protocol Version 3 (POP3) tau luam tawm xyoo 1988 thiab suav nrog cov txheej txheem kev lees paub tshiab thiab lwm yam ua.
kab hauv qab
Cov lus xa email tuaj yog khaws cia ntawm POP server kom txog thaum koj nkag rau hauv (nrog tus neeg siv email) thiab rub tawm cov lus rau koj lub computer. Tus qauv POP tsis suav nrog kev xa xov. Simple Mail Transfer Protocol (SMTP) yog siv los xa email.
Yuav ua li cas POP piv rau IMAP
POP thiab Internet Message Access Protocol (IMAP) zoo ib yam uas ob qho tib si siv rau kev xa email. Txawm li cas los xij, POP yog laus dua thiab txhais cov lus txib yooj yim rau kev xa email. IMAP tso cai rau synchronization ntawm cov khoom siv thiab kev siv online. Nrog POP, cov lus khaws cia thiab tswj hwm hauv ib cheeb tsam ntawm ib lub computer lossis ntaus ntawv. Yog li ntawd, POP yog qhov yooj yim dua los siv thiab feem ntau txhim khu kev qha thiab ruaj khov.
Disadvantages of POP
POP yog cov txheej txheem txwv uas tso cai rau email program tsuas yog rub tawm cov lus mus rau lub khoos phis tawj lossis lub cuab yeej, nrog rau kev xaiv khaws cov ntawv theej ntawm lub server rau yav tom ntej rub tawm. Thaum POP cia email cov kev pab cuam taug qab cov lus rov qab, qee zaum cov txheej txheem no ua tsis tiav, thiab cov lus yuav rub tawm dua. Tsis tas li, nrog POP, nws tsis tuaj yeem nkag mus rau tib tus email account los ntawm ntau lub khoos phis tawj lossis cov khoom siv thiab muaj kev ua haujlwm synchronize ntawm lawv.
