Similar to バックスキャッター_(電子メール)

Backscatter (email)

Email authentication

S/MIME

Sender ID

DomainKeys

Bounce message

Opt-in email

Email spam

Email filtering

Email marketing

Bitmessage

Brand Indicators for Message Identification

DomainKeys Identified Mail

DMARC

POP before SMTP

Sender Policy Framework

Forward-confirmed reverse DNS

Email

Internet abuse

AOL Mail

AppleSingle and AppleDouble formats

Biff (Unix)