Thank you for bringing that contact form 7 has a Hebrew domain file. With the contact form though, coding the action of a contact form is very simple, and I can make sure the action does exactly what I want it to do. One of the difficulties with Hebrew, exactly the same for Arabic, is the “right to left” of the languages. It is certainly worth while to check out whether there are already Hebrew versions of the plugins. But there are times when this challenge can take much energy to solve.