Similar to フィードバックループ
DKIM
DomainKeys Identified MailBase64
Base64DMARC
DMARCExchange ActiveSync
Exchange ActiveSyncInternet Message Access Protocol
Internet Message Access ProtocolJSON Meta Application Protocol
JSON Meta Application ProtocolMessaging Application Programming Interface
MAPIMIME
MIMEPOP before SMTP
POP before SMTPPost Office Protocol
Post Office ProtocolPPAP (セキュリティ)
Quoted-printable
Quoted-printableSender Policy Framework
Sender Policy FrameworkSMTP
Simple Mail Transfer ProtocolSMTP-AUTH
SMTPS
SMTPSSTARTTLS
Opportunistic TLSUTF-7
UTF-7送信ドメイン認証
Email authenticationYahoo
Yahoo▼-2 trendsYahoo!7
Yahoo AustraliaYahoo! Messenger
Yahoo MessengerTHE PAGE
Tumblr
TumblrYahoo! Widget Engine
Yahoo WidgetsYahoo! Directory
Yahoo DirectoryZimbra
ZimbraArtifact
Artifact (app)