@Vivaldi This is what I received today. Based on the weird email address, I concluded it is a spam.
If you have a fediverse account, you can quote this note from your own instance. Search https://social.vivaldi.net/users/masayuki60/statuses/115888816602530649 on your instance and quote it. (Note that quoting is not supported in Mastodon.)
RE: https://social.vivaldi.net/@masayuki60/115888816602530649
ใใฎในใใ ใกใผใซใ่ชๅใฎใจใใใซใๆฅใฆใใช 