3 ms·
Yes, but not that well known. It’s part of the SMTP spec.
by frankwiles 5y ago
Yes, but not that well known. It’s part of the SMTP spec.
- TimWolla 5y agoIt's not part of the SMTP spec. SMTP treats the local part as an opaque identifier. It's somewhat common though and RFC 5233 extends the sieve filtering language to support it: https://datatracker.ietf.org/doc/html/rfc5233 https://datatracker.ietf.org/doc/html/rfc5233