Save Attachments
Before you delete attachments to an email message, save important attached files to your computer, OneDrive, or other cloud storage service.
Select the email that contains the attachments you want to save. The message displays in the Preview pane. In Outlook 2019, 2016, and 2013, select the attachment dropdown arrow and choose Save All Attachments. In Outlook 2010, go to the Attachments tab and select Save All Attachments. In Outlook 2007, go to the File menu and select Save Attachments > All Attachments. In the Save All Attachments dialog box, select OK. To remove a file from the list, press Ctrl and click the file. Only highlighted files are saved. In the Save Attachment dialog box, select the folder in which you want to save the files. Select Save.
Delete Attachments From Messages in Outlook
To delete attachments from messages in Outlook:
In Outlook 2010, go to the Attachments tab and select Save All Attachments.
In Outlook 2007, go to the File menu and select Save Attachments > All Attachments.
Select the message that contains the attachments. Select the attachment dropdown arrow. Select Remove Attachment. In the confirmation dialog box, select Remove Attachment. The attachment is removed from the message, and the rest of the message is left intact.