Repeated email validation is not working

[anukeshi]

Hi,

I have 2 definitions for sending invitation to a bunch of emails, and deleting an invitation sent to single email:

When sending an invitation to the email address example+sample@email.com is not throwing any error. Here's the definition for SendInvitation.

message SendInvitation {
    repeated string email_arr = 1 [(validate.rules).repeated.items.string.email = true];
}

But when deleting an invitation sent to the same email example+sample@email.com it throws the following error which is correct and the expected behavior. As it contains '+' symbol, which is not supported in RFC 5322 email standards.
value must be a valid email address | caused by: mail: no angle-addr. Here's the definition for DeleteInvitation.

message DeleteInvitation {
    string email = 1 [(validate.rules).string.email = true];
}

However eventhough both send & delete have same validation, it seems the validation is not properly functioning for send invitation as it has repeated fields. Hence what would be the proper way for validating repeated emails?

Thank you.