Message-ID
Unique message identifier
A Message-ID is a unique identifier assigned to an email when it's created, appearing in the message header.
The format typically combines a random string, the @ symbol, and a domain name: Message-ID: <abc123@mail.example.com>.
Email systems use Message-IDs to track messages, prevent duplicates, and thread conversations by linking replies to originals.
Message receiving folder
- mailboxContainer for delivered mail
- recipientOne who receives something
- composeCreate or arrange
- sendCause to arrive elsewhere
reply · forward · thread · conversation · draft · attachment · archive · spam
inbox
Message receiving folder
send · reply · forward · thread · conversation · draft · attachment · archive · spam · filter
unique
Only one exists
- stringSlender fiber or character sequence
- alphanumericLetters and digits combined
- hashChopped mixture, cooked together
reference · tracking · UUID · timestamp · domain · format · lookup · deduplication · key · index
SMTP
Email transmission protocol
- MIMEEmail content-type standard
- metadataDescriptive information about content
- headersTop-of-page identifiers
envelope · fields · specification · syntax · threading · standards · encoding · multipart · charset
message, ID, messages, messaging, messenger, messengers, identify, identity, identification