Email yog dab tsi? Daim ntawv qhia tag nrho rau ib ntus Emails thiab ntawv
ceev
ua kom paub
Keeb kwm ntawm email
Email ua hauj lwm?
Components ntawm ib tug email
Dab tsi yog ib tug email chaw nyob?
Email clients piav
Puas ruaj ntseg?
Vim li cas ib ntus xa ntawv tseem ceeb hnub no
tas
ua kom paub
Email, uas stands rau email, yog tus backbone ntawm cov kev sib txuas lus. Nws tso cai rau cov neeg hla lub ntiaj teb los txauv lus instantly, hloov tus qeeb ntawm lub cev ntawv nrog nyob ze real-time xa. "Email" hais txog ob lub kaw lus sib txuas lus thiab cov lus.
Thaum email kuj yog ib fixture nyob rau hauv lub lag luam, kev kawm ntawv, thiab koj tus kheej lub neej, nws kuj yog qhov teeb meem. Spam, phishing, thiab cov ntaub ntawv breaches yog ntshai heev txawm heev. Qhov no yog qhov twg ib ntus email (ib ntus xa ntawv) los nyob rau hauv. Ib qhov kev pab xws li tmailor.com muaj ib tug disposable inbox los tiv thaiv cov neeg los ntawm spam thiab tiv thaiv lawv tus kheej.
Nyob rau hauv daim ntawv qhia no, peb mam tshawb cov keeb kwm ntawm email, li cas nws ua haujlwm, nws components, thiab vim li cas ib ntus xa ntawv yog qhia tseem ceeb hnub no.
Keeb kwm ntawm email
Lub hauv paus pib thaum ntxov 1970s. Programmer Ray Tomlinson, uas ua haujlwm rau lub ARPANET — tus precursor rau hnub no internet — xa cov lus thawj electronic lus ntawm ob lub cav tov. Nws innovation nrog rau tam sim no-nrov "@" cim cais cov neeg siv los ntawm lub computer host computer.
Thoob plaws hauv lub 1980s thiab 1990s, email txhab dhau kev tshawb fawb labs thiab cov tub rog tes hauj lwm. Nrog tus sawv ntawm koj tus kheej computers thiab thaum ntxov email neeg xws li Eudora thiab Microsoft Outlook, email los ua tau rau tus neeg siv nruab nrab. Nyob rau lub caij Kwvyees li xyoo 1990, webmail platforms xws li Hotmail thiab Yahoo xa ntawv ua rau leej twg nrog ib browser muaj ib tug dawb email chaw nyob.
Vas nthiv rau hnub no, thiab email yog ib qho tseem ceeb rau cov lag luam, kev sib txuas lus, hauv internet sau npe, thiab e-commerce. Tab sis nrog nws tej chaw los tshiab txoj kev sib tw tshiab: phishing tuaj, malware, spam dej nyab, thiab tsis pub twg paub. Cov kev sib tw tau coj coob tus neeg mus txais ib ntus xa ntawv thaum lawv xav tau sij hawm luv luv inboxes.
Email ua hauj lwm?
Txawm tias xa emails yuav siv sij hawm ob peb vib nas this, tus qab-tus-scenes txheej txheem yog nyuab.
Kauj ruam-ntawm-kauj ruam routing
- Tsim lus: Cov neeg sau emails nyob rau hauv ib tug neeg email (xws li Outlook los yog Gmail).
- SMTP zaug pib: Tus xa server, hu ua tus xa transfer Agent (MTA), pib qhov zoo sib xws siv cov yooj yim xa mus rau protocol (SMTP).
- DNS Lookup: Cov tshev mis no yuav tau txais kev pab los ntawm domain Name System (DNS) mus nrhiav kom tau qhov tsim nyog xa ntawv txauv server (MX).
- Forwarding lus: Yog hais tias ib tug MX server tshwm sim, cov lus yog forwarded rau tus neeg tau txais kev pab xa ntawv tuaj.
- Cia thiab retrieval: Lus no muab khaws cia rau cov kev pab kom txog thaum tus neeg tau txais kev pab retrieves lawv siv lub chaw ua hauj lwm protocol (POP3) los yog Internet Message Access Protocol (IMAP).
POP3 vs IMAP
- POP3 (Postal Protocol): Download cov lus rau tus ntaus ntawv thiab feem ntau delete nws los ntawm cov server. Nws zoo li noj ib tsab ntawv thiab muab nws nyob rau hauv ib lub rooj drawer.
- IMAP (Internet Message Access Protocol): Khaws lus rau cov server thiab sync hla li lawm. Nws zoo li nqa ib tsab ntawv nyob rau hauv koj hnab tshos ces koj yuav nyeem nws qhov twg.
Zoo ib yam li lub ntiaj teb no tiag
Xav txog tej yam Alice xav ua tsaug Bob. Nws sau ib tsab ntawv (email) thiab muab nws rau ib courier (MTA). Tus courier yuav siv sij hawm rau lub chaw ua hauj lwm hab txhawb (SMTP), uas verifies Bob qhov chaw nyob (DNS lookup). Yog hais tias qhov chaw nyob tshwm sim, lwm courier yuav rau pem hauv ntej rau Bob mailbox (MX server). Tom qab ntawd, Bob txiav txim siab kom cov ntawv nyob rau hauv lub rooj drawer (POP3) los yog coj lawv nrog nws (IMAP).
Nyob rau hauv rooj plaub ntawm ib ntus xa ntawv, lub kaw lus postal yog zoo sib xws, tab sis Bob tus mailbox yuav nws tus kheej destruct hauv 10 feeb. Li ntawd, Alice yuav xa nws nco, Bob yuav nyeem nws, thiab ces cov mailbox yuav ploj, ces tsis muaj ib txoj lw.
Components ntawm ib tug email
Txhua email consists ntawm peb lub ntsiab seem:
hnab ntawv SMTP
SMTP envelopes yuav tsis pom xaus cov neeg siv. Nws muaj xws li cov sender thiab receiver qhov chaw nyob siv los ntawm cov kev pab thaum lub transmission. Zoo li sab nraum lub hnab ntawv postal, nws xyuas kom xa ntawv yog routed rau qhov chaw zoo. Txhua zaus ib tug email txav ntawm servers, lub hnab ntawv yuav muab kho.
Xav xwm tshiab
Lub npe yog pom rau tus neeg tau txais kev pab thiab muaj:
- Hnub: Thaum tus email xa.
- Ntawm: Tus sender qhov chaw nyob (thiab zaub lub npe yog muaj).
- Rau: Tus neeg tau txais kev pab qhov chaw nyob.
- Kawm: Luv luv piav cov lus.
- Cc (carbon copy): Ib daim qauv xa mus rau lwm tus neeg tau txais kev pab (qhia).
- Bcc (dig muag): Muab cov ntaub ntawv luam tawm rau lwm cov neeg tau txais kev pab.
Attackers feem ntau spoof headers kom spam los yog phishing zoo tseeb. Qhov no yog vim li cas ib ntus xa ntawv chaw nyob yog zoo: txawm tias koj tau txais ib cov lus malicious, nws yuav ntev expire.
Ce
Cov ntsiab lus muaj ib cov lus tseeb. Nws yuav ua tau:
- Ntshiab Phau Ntawv: Yooj yim, universally compatible.
- HTML: Txhawb formatting, dluab, thiab kev mus, tiam sis feem ntau yuav ua rau muaj spam filters.
- Txuas: Cov ntaub ntawv xws li PDFs, dluab, los yog kis tau tus kab mob no.
Disposable inboxes kov tib lub cev hom, tiam sis feem ntau txwv los yog thaiv cov attachments loj rau kev ruaj ntseg.
Dab tsi yog ib tug email chaw nyob?
Ib qhov chaw nyob email yog ib tug cim qhia rau ib mailbox. Nws muaj peb qhov chaw:
- Sab Hauv Zos: Ua ntej qhov "@" cim (e.g., neeg ua hauj lwm ).
- @ Symbol: Cais cov neeg siv thiab domains.
- Domain: Tom qab cov "@" cim (e.g., example.com ).
Cov Cai Thiab Cov Kev Txwv
- Cov cim 320 (txawm tias 254 pom zoo).
- Domain npe muaj xws li cov tsiaj ntawv, zauv, thiab hyphens.
- Cov seem hauv zos tej zaum yuav muaj cov ntawv, zauv, thiab tej punctuation marks.
Pheej chaw nyob vs. ib ntus chaw nyob
Tsoos email chaw nyob yuav kawg indefinitely thiab tied rau ib tug kheej los yog ua hauj lwm yog leejtwg tiag. Tiam sis, ib ntus chaw nyob yog tsim thiab deleted automatically tom qab ob peb feeb los yog teev.
Qhov no yog ib qho tseem ceeb heev rau:
- Kuaj koj lub website lossis lub website.
- Download tau ib daim ntawv dawb los yog qhov chaw muab kev pab.
- Tsis txhob li cas spam tom qab ib one-time subscription.
Rau cov neeg siv ua ntej, koj yuav txawm reuse ib ntus chaw nyob mus cuag nws lifespan thaum tiv thaiv koj tus thawj inbox.
Email clients piav
Ib tug neeg tau software los yog ib daim ntawv thov uas tso cai rau cov neeg xa thiab tau txais emails.
Desktop Client
Piv txwv li, Outlook, Thunderbird.
- Pros: Offline access, ntseg nta, backup xaiv.
- Cons: Ntaus ntawv-specific, setup yuav tsum tau txhaj.
Web Site
Piv txwv li, Gmail, Yahoo xa ntawv.
- Pros: Siv tau los ntawm tej browser, dawb.
- Cons: Nws yuav tsum tau muaj internet sib txuas thiab yog prone rau scams.
Ib ntus xa ntawv app
Lightweight kev pab xws li tmailor.com ua hauj lwm zoo li ib tug instant email neeg. Tsis txhob tswj xyoo archival correspondence, lawv muaj ib tug tshiab, disposable inbox rau ib one-time siv.
Puas ruaj ntseg?
Hom vulnerabilities
- Tsis muaj coding: Yog default, emails yuav tau sim.
- Swindle: Fake emails trick cov neeg siv rau revealing rhiab rhiab.
- Domain Spoofing: Attackers spoof sender cov lus qhia.
- Ransomware thiab malware: Cov attachment kis malicious code.
- Spam: Unwanted bulk lus clog tuaj rau inbox.
Encryption xaiv
- TLS (thauj layer Security): Hais yog encrypted thaum transmission, tiam sis tus neeg zov me nyuam yeej tseem pom cov ntsiab lus.
- End-to-end encryption (E2EE): Tsuas yog tus sender thiab receiver yuav decrypt cov lus.
Ib tsab ntawv mus ib ntus rau kev tiv thaiv
Ib ntus xa ntawv tsis daws tag nrho encryption teeb meem, tab sis nws minimizes kis tau. Yog hais tias ib tug disposable inbox tau spam los yog phishing lus, cov neeg siv yuav tso tseg nws. Qhov no txwv lub lifespan ntawm qhov uas yuav raug thiab pab kom koj tus thawj email chaw nyob zoo.
Yog xav paub ntxiv txog infrastructure, saib: vim li cas thiaj tmailor.com siv Google servers los host domains?
Vim li cas ib ntus xa ntawv tseem ceeb hnub no
Email tseem haib tab sis cluttered. Spam filters tsis zoo meej, thiab cov ntaub ntawv brokers yog lossi sau qhov chaw nyob. Ib ntus xa ntawv muaj ib cov kua tshuaj:
- Tsis Pub Twg Paub: Tsis tas yuav muab koj tus kheej tiag tiag.
- Tswj spam: Tsis txhob clutter hauv koj inbox rau ib lub sij hawm ntev.
- Convenient: Instant setup, tsis muaj npe yuav tsum tau sau npe.
- Security: Txo nres chaw rau hackers.
Piv txwv li, ib 10-feeb xa ntawv chaw nyob ntawm tmailor.com yog instantly generated, ua haujlwm rau cov hauj lwm luv luv, thiab disappears tsis muaj ib txoj lw.
tas
Email yog ib lub tshuab platform, tiam sis nws tseem yog ib hom phiaj heev rau attackers. To taub li cas nws ua haujlwm – los ntawm SMTP hnab ntawv rau pop3 protocol – pab cov neeg siv cov kev txaus siab rau nws cov strengths thiab weaknesses.
Thaum tsoos chaw nyob tseem ceeb, ib ntus email kev pab muab ib qho invaluable kev ruaj ntseg net. Seb kos npe rau ib rooj plaub dawb mus sib hais, downloading cov chaw muab kev pab, los yog tiv thaiv koj tus kheej, ib ntus xa ntawv cia koj nyob twj ywm.
Nrhiav tau ntxiv txog tmailor.com thiab saib li cas disposable mailboxes yuav ua rau koj lub neej yooj yim thiab ntau lwm yam.
