def METHOD_NAME(request):
    """Send a new private message."""
    to = request.GET.get("to")
    if to:
        try:
            for username in to.split(","):
                User.objects.get(username=username)
        except User.DoesNotExist:
            contrib_messages.add_message(
                request,
                contrib_messages.ERROR,
                _("Invalid username provided. Enter a new username below."),
            )
            return HttpResponseRedirect(reverse("messages.new"))
    message = request.GET.get("message")
    form = MessageForm(request.POST or None, initial={"to": to, "message": message})
    if (
        request.method == "POST"
        and form.is_valid()
        and not is_ratelimited(request, "primate-message-day", "50/d")
    ):
        send_message(form.cleaned_data["to"], form.cleaned_data["message"], request.user)
        if form.cleaned_data["in_reply_to"]:
            irt = form.cleaned_data["in_reply_to"]
            try:
                m = InboxMessage.objects.get(pk=irt, to=request.user)
                m.update(replied=True)
            except InboxMessage.DoesNotExist:
                pass
        contrib_messages.add_message(
            request, contrib_messages.SUCCESS, _("Your message was sent!")
        )
        return HttpResponseRedirect(reverse("messages.inbox"))
    return render(request, "messages/new.html", {"form": form})