Hi, FanacooL yes, I understand, the stationery method is what we use with Lotus Notes/Domino.

As for your question, If you reply to an e-mail you will have to add the disclaimer to your message as you are using their stationery. Otherwise you will have to copy their e-mail into a new one of your own.

If you just forward something, you do not need a disclaimer, as it is not legally the responsibility of you or your company. It is the responsibility of the originator.