Email tools

Each title takes you to where the respective tool is explained.

Lookups

Configuration database

SRV records

MX records

SPF record

DKIM record

DMARC record

BIMI record

TLSA records

MTA-STS policy

TLS Reporting record

SMIMEA records

OPENPGPKEY records

Protocols

ESMTP

Examples:

Email tracking

POP3

IMAP

Sieve

ManageSieve

Encodings

Quoted-Printable encoding

Base64 encoding

Percent encoding

Encoded-Word encoding

Punycode encoding

Extended-Parameter encoding

Examples:

Various

Hash function

Unicode normalization

Unix time conversion

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