No matter anywhere you type your comments in the original email messages when replying, the following steps will make your comments strike the recipients' eyes easily.

Step 1: Click the File > Options.

Step 2: In the Outlook Options dialog box, click the Mail in the left bar.

Step 3: Go to the Replies and forwards section, and check the Preface comments with: option, and then enter some preface text in the following box. See the following screen shot:

Step 4: Click the OK button to exit the dialog box.

Up to now, you have turned on the Inline Comment feature. When you are replying, any content (comments) you typed in the original email messages will be formatted with a distinguishing font color, and marked with your specified preface text. See the following screen shot:

Notes:
(1) If original email message is plain text, the inline comments (tracking changes) will only be marked with your specified preface text, but not be formatted with special font color.
(2) If you are using Outlook 2007 or earlier versions, please click Tools > Options, and then in the Options dialog box click E-mail Options button > check Mark my comments with: option and type preface text in the following box. See screenshots below:

Sometimes, you may think the inline comments not obviously enough to take attention of recipients. And sometimes you also want to insert comments in new composing messages. Do not worry, with Kutools for Excel’s New Comment utility you can easily insert comments same as those in Microsoft Word documents in messages.

When you composing new messages, or replying/forwarding messages, select the text you will add comment for, and then click Kutools > New Comment.

Now you will see the same comment as that in Microsoft Word is inserted into the message at once. See screen shot above.

Note: This utility works well in Outlook 2007 and 2010, but not work in Outlook 2013.

Easily reply with sender name as auto personal greeting in Outlook

Most of time, you manually type Hi/Hello sender name as greeting in replying messages in Outlook. But, with fantastic Auto Greeting feature of Kutools for Outlook, greeting word and selected email's sender name will be added in replying message automatically as personal greeting as below screenshot. Save time!