With Outlook 365

1. Open Outlook and double-click the e-mail you would like to forward.

2. Click the button with the three dots at the top right and select "Forward as Attachment".

3. A window will open with a new e-mail draft. The attached e-mail can be seen as an "Outlook item". After choosing a recipient and adjusting the subject if needed, the e-mail can be sent.

With Outlook 2016

1. Open Outlook and double-click the e-mail you would like to forward.

2. Select the Button "More" and click "Forward as Attachment".

3. A new window opens and you can see the selected mail under "Attached" as attachment. After adding the recipient and, if necessary, changing the subject, you can send your e-mail.

With Outlook Web App (OWA)

1. Open the Outlook Web App and sign in

2. Select the e-mail you would like to forward and select "New mail" or directly "Forward".

3. Now, drag the e-mail you would like to forward into the editing window. The e-mail now appears as an attached file. Finally, you enter the recipients and send the e-mail.

With Thunderbird

1.Open Thunderbird and right-click the e-mail you would like to forward.

2. Select "Forward as" and choose "Attachment".

3. A new window opens and you can see that your email has been attached. After adding the recipient, and if necessary changing the subject, you can send your email.