I have set my font size preferences (New mail, Reply or forward, Plain text) in outlook 2016 for Mac to Calibri 11. This works as expected when I compose a new mail. However, when I go to reply or forward an existing email - in the compose window that pops up the font size for the email headers ("from/date/to/subject" lines from the previous messages) always display in Calibri 12 font (slightly larger than the rest of the email's body text which is correctly set to Calibri 11.). I can manually correct the font size each time by selecting the 3 lines and setting them to 11. But to do this every time I reply or forward an email gets old. I suspect this is a bug in that Outlook when it goes to reply or forward a message the code that inserts the lines "from/date/to/subjext" lines into the body of the email (right below where you start typing) is using a fixed font size value rather than using the font size set it Outlook's preferences. Here is my setup: Outlook for Mac Version 15.31 (170124) Using older versions of Outlook for Mac in business environments Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question. Thanks for your reply. We suggest you submit feedback to our related team via: https://outlook.uservoice.com/forums/293343-outlook-for-mac Understanding your experience helps us to make our product and service better for you and others. 6 additional answers Anonymous 2017-01-31T19:24:40+00:00 Barry, Are you are stating that everything is working as designed? And if thats the case, then what is the purpose of the setting a custom font size in Outlook->Preferences->Fonts->New Email if new emails don't go out with a font size of 11? 0 comments No comments Report Are you are stating that everything is working as designed? And if thats the case, then what is the purpose of the setting a custom font size in Outlook->Preferences->Fonts->New Email if new emails don't go out with a font size of 11? Anonymous 2017-01-30T15:26:35+00:00 Hi Robert2cal, Thanks for your information. If the emails you received are sent from an Outlook for Mac client, the “from/date/to/subject” field’s font size will be Calibri 12.0pt. If the emails are sent from an Outlook for Windows client, the “from/date/to/subject” field’s font size will be Calibri 11.0pt. It’s an expected behavior. If you have more concern about this, please submit feedback via the link I mentioned before. Thanks for your understanding. Barry 0 comments No comments Report

Thanks for your information. If the emails you received are sent from an Outlook for Mac client, the “from/date/to/subject” field’s font size will be Calibri 12.0pt. If the emails are sent from an Outlook for Windows client, the “from/date/to/subject” field’s font size will be Calibri 11.0pt. It’s an expected behavior. If you have more concern about this, please submit feedback via the link I mentioned before. Thanks for your understanding. Anonymous 2017-01-29T20:24:09+00:00 Thanks for pointing me in the right direction. The problem does originate with the creation of the original email. For new emails, Outlook for Mac is not correctly following the font size preferences set by the user. It appears to encode a default font size of 12 into the HTML of the email and then overrides it only for the body text using whatever font size the user specified in the Outlook preferences. This has the effect of generating a new email with the “from/date/to/subjest” field is set to Calibri 12 (default font size) and the body text to font size 11 (user specified in Outlook preferences). This should be a bug. I ran this same test using Outlook for Windows and it correctly applies the same font size preference of 11 to both the body of the email and the “from/date/to/subjest” fields. In other words Outlook for Windows and even Outlook for Web simple set the default font size in the email to be whatever the user specified in the Outlook preferences. See below screenshots of HTML source for 2 new emails. - New Email generated by Outlook for Mac showing improper way of encoding new emails - New Email generated by Outlook for Windows showing how it should be done. 0 comments No comments Report Thanks for pointing me in the right direction. The problem does originate with the creation of the original email. For new emails, Outlook for Mac is not correctly following the font size preferences set by the user. It appears to encode a default font size of 12 into the HTML of the email and then overrides it only for the body text using whatever font size the user specified in the Outlook preferences. This has the effect of generating a new email with the “from/date/to/subjest” field is set to Calibri 12 (default font size) and the body text to font size 11 (user specified in Outlook preferences). This should be a bug. I ran this same test using Outlook for Windows and it correctly applies the same font size preference of 11 to both the body of the email and the “from/date/to/subjest” fields. In other words Outlook for Windows and even Outlook for Web simple set the default font size in the email to be whatever the user specified in the Outlook preferences. See below screenshots of HTML source for 2 new emails. - New Email generated by Outlook for Mac showing improper way of encoding new emails - New Email generated by Outlook for Windows showing how it should be done. Anonymous 2017-01-29T02:15:45+00:00 Hi Robert2cal, According to my tests, the font size of the “from/date/to/subjest” field is set to Calibri 12 and there is no way to change it. If you have more concern about this, we suggest you submit feedback to our related team via https://outlook.uservoice.com/forums/293343-outlook-for-mac . Many products' features/services have been designed based on customers' constructive ideas. Thanks for your understanding. Barry 0 comments No comments Report According to my tests, the font size of the “from/date/to/subjest” field is set to Calibri 12 and there is no way to change it. If you have more concern about this, we suggest you submit feedback to our related team via https://outlook.uservoice.com/forums/293343-outlook-for-mac . Many products' features/services have been designed based on customers' constructive ideas. Thanks for your understanding.