Before we can answer this, we need to understand what you are trying to do.
Are you forwarding emails you already have in your mailbox, or do you wish
to forward all new incoming emails as they arrive?
Give us a range for "multiple" emails. 2? 2000?
As far as I know, Gmail's web interface doesn't let you select multiple
emails and forward them all at once; you need to forward them one at a time;
unless they are in the same 'conversation.'
Gmail's web interface has ways to automatically forward new incoming emails
to one person, but I don't think it can do more than one recipient this way
(unless you create something like a Googlegroup or Yahoogroup or other email
list and handle them that way ... good for newsletter distribution lists).
You can manually forward individual messages (or conversations) to one or
multiple people. Start by opening the message, then click "Forward" (near
the bottom) or "Forward all" (on the right) and fill in their addresses.
If you run an email client program on your PC and use IMAP or POP to access
your Gmail, some of these email client programs let you do the kinds of
things you want to do. Examples of email programs are Thunderbird, Outlook,
and Outlook Express.
Andy
Threads, or Conversations, are related email messages that are grouped
together. Gmail recognizes emails with the same or very similar subject
lines and assumes they are replies to one another, so it keeps them together
so you can see all of them in the same window instead of having to pop back
and forth between different messages.
The "Gmail interface" is what you see when you login to Gmail (www.gmail.com
or mail.google.com). It is the way things are laid out on your screen
within your web browser's window, and the way their menus and buttons work
(not the browser's menus and buttons, but Gmail's menus and buttons).
Hope this helps.
Andy