Office 365 (Outlook 2013 / 2016 for Win) - Reply To or Forward an Email Message
When you receive a message, you can send a reply to just the sender, or if there were multiple recipients, you can include them as well. You also have the option to forward the message to additional people.
1. In the Reading Pane, click Reply, Reply All, or Forward.
If the Reading Pane is off or if you’ve opened the message in its own window, on the Home or Message tab, click Reply, Reply All, or Forward.
2. Write your message.
NOTE If you’d like to open your reply in a new window (so you can do things like change the font), click the Pop Out button.
3. Recipients can be added or removed in the To, Cc, and Bcc boxes.
o Add a recipient Click To, Cc or Bcc, and then select a recipient. You can also type the recipient’s name or email address in the box.
o Remove a recipient Click the name, and then press Delete.
4. Click Send.
TIP: If you want all replies to automatically open in a new window, from the File menu, click Options > Mail. Under Replies and forwards, check the Open replies and forwards in a new window box.
When you reply to an email message, the person who sent you the message is automatically added in the To box. Similarly, when you use Reply All, the To box automatically includes the sender and all of the other people who received the original message.
Before you click Reply All, consider whether everyone needs to see your reply, especially when the message was sent to a lot of people or distribution lists. It's often better to click Reply, and then add only the people you really want to include. Or, if you decide to click Reply All, remove people who don’t need to see your message.
When you forward a message, the To, Cc, and Bcc boxes are empty. Enter at least one recipient in the To box.
TIP: If you want to forward two or more messages to the same recipients in one message, in the message list, press and hold Ctrl as you click each message. Then, click Home > Forward. Each message is forwarded as attachments in one new message.
When you forward a message, the message includes any attachments that were included with the original message. Attachments aren’t included when you reply to a message. That’s because you would be sending the same attachment the sender sent you.