[DEV-286] - Sanitise emails

Orestis Athanasopoulos Antoniourequested to merge
orestis/dev-286-sanitise-emails into main

The regex works for single or multiple subaddresses (i.e. valid for foo+bar@domain.com but also for foo+bar+bar+foo@domain.com)

Edited by Orestis Athanasopoulos Antoniou

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