This i don't belive.Most e-mail servers cannot handle such e-mail addresses and therefore many mails won't reach their receipients.
As RFC3490 says:
Relevant email IDN RFCs: https://tools.ietf.org/html/rfc6531IDNA does not update the existing email standards, which
allow only ASCII characters in local parts. Therefore, unless the
email standards are revised to invite the use of IDNA for local
parts, a domain label that holds the local part of an email address
SHOULD NOT begin with the ACE prefix, and even if it does