Complexities of e-mail validation logic

Re:Complexities of e-mail validation logic by stonogo on Monday May 24, 2021 @01:54PM (#27267539)

Subaddressing is standardized in RFC 5233.

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Re:Complexities of e-mail validation logic by nybble41 on Monday May 24, 2021 @01:58PM (#27267594)

For the Sieve Email Filtering Language, yes. Which is not actually part of SMTP. And even in RFC 5233 the specific separator sequence is up to the server; the RFC only specifies queries for ":user", ":detail", and ":localpart" to filter on the different fields independent of the choice of separator.

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Re:Complexities of e-mail validation logic by dejj on Tuesday May 25, 2021 @03:26AM (#27273910)

Can you recommend a library / tool which can extract those reliably?

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