from typing import List
import re


def get_assignees(content: str) -> List[str]:
    """Gets assignees from comment."""
    regex = r"\+([a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+)"
    matches = re.findall(regex, content)
    return [m for m in matches]