Hi @NUNO MARZIA ,
Welcome to our forum!
According to your description, I understand that you want to attach the attachment of the original email when replying to all, right?
If so, the method mentioned by Barry schwarz-8780 is indeed a good way to forward the original message and enter all recipient addresses.
In addition of course there is a more convenient method. Please refer to the following steps:
1.Click Outlook at the top>Preferences…>Composing>Under HTML tab, unclick Close the original message window after replying or forwarding;
2.Double click the original email and click Reply all, then the reply email will displayed in a new window;
3.Drag the attachment of the original message to the reply message.
4.Then you can reply to all recipients with the attachment of the original message.
Hope the above help!
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