Attach an item to a message in Outlook

1. From a new message or reply in classic Outlook, go to Insert and select   Outlook Item in the Include group.

2. From the Insert Item dialog, select a folder at the top, and then choose an item (email, meeting, contact). Under Insert as, choose Attachment for a regular attachment, or Text to insert item text in the message body. 

3. You can also select from the Include group:
     Insert Calendar and choose details and date range. 
     Insert business card and choose a card. The card is displayed and a .vcf file is attached.

4. Select OK. 

Tip: Drag and drop files, images, email messages, or attachments in other messages into your new message. 

In new Outlook​​​​​​​, you can attach an email message to another message and send it that way:

1. Open the message you want to attach.

2. Near the upper right corner of the message, select  More actions > Save as, then save the file to your device.

3. Open the message you want to attach to, and on the Insert tab, select  Attach file.

4. Browse for the message file you saved in step 2, select it, and then select Open.

1. To attach Emails or Contacts in Outlook for Mac​​​​​​​, from a new or reply message, move the window to the side.

2. In Inbox or Contacts, select and drag a message or contact and drop on the body of the new message.

3. Drag files from your computer, OneDrive, or the cloud, or attachments in other messages into the message to attach them. For images, drop the file over the To/From/Subject area to attach, or into the body to display in the message.

Tip: To attach folders, blocked, or unsafe files, zip them first. For more info, see Zip folders and blocked files to send as attachments.