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Adjusting Outlook's Zoom Setting in Email

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› Outlook › Adjusting Outlook’s Zoom Setting in Email

Last reviewed on October 2, 2023     232 Comments

Applies to: Outlook 365 (Win), Outlook 2019 (Win), Outlook 2016 (Win), Outlook 2013, Outlook 2010, Outlook 2007

November 30 2018: The latest monthly Office 365 updates include an option to lock the zoom level.

I get quite a few complaints from people who say their fonts are tiny (or huge) or the font used for the reply shrinks yet Microsoft Outlook shows they are using a normal size font (such as 10 or 12 pt). Outlook users with high resolutions screens may have a problem reading incoming emails.

This is caused by the Zoom setting.

Lock the Zoom level in Outlook 365

If you are an Office 365 subscriber, you can now set Outlook to remember your zoom level.

To lock the zoom level reading messages, open the Zoom While Reading dialog and tick the box to Remember my preference.

You can open the Zoom while reading dialog by clicking on the zoom % in the status bar or look for the Zoom button on the Message menu in an opened message.
status-bar-zoom

Then tick the box to remember your preference.
zoom while reading

Zoom Is On When Reading Mail

When your incoming email is zoomed, the easiest fix is to hold Ctrl as you roll the mouse wheel (this is the likely cause for many people).

Keyboarders can use the Ctrl and plus (+) or minus (-) keys to change the zoom level in increments or Ctrl and the zero (0) key to go to 100%. Note: these keyboard shortcuts do not work in Outlook 2013/2016.

You can also click the Zoom button in the ribbon and set it back to 100%.

Click the button in the ribbon to open the zoom dialog and select the desired zoom level.
click the zoom button on the ribbon

Outlook 2010, 2013, and 2016, 2019, 2021, 365 have a zoom slider in the main Outlook window status bar (on the right side). Use this slider to adjust the zoom in the reading pane.
zoom slider in status bar

If you prefer, you can click on the zoom % (100% in the screenshot) to open the zoom dialog.
click on the percentage to open the dialog

Note that changing the zoom setting is not persistent for reading messages unless you are using a current version of Outlook that has the Remember my preference checkbox. To make the zoom level persistent, you need to use an add-in or a macro. A list of zoom tools is in the Tools Section and a macro is at the end.

 

When Composing Message, Zoom Is Always On

Many times, when you make the change to a message you are composing and send it, the next message you compose reverts to the goofy zoom setting. This is because making changes to a message then sending the message applies the changes to that message only. If you make the changes then close the message, it should apply the changes to all future messages.

When zoom is stuck on a value (usually a tiny font), you can reset it by changing the zoom level then closing, but not sending, the message. If you change the zoom level then send, the change applies only to the message you changed, not to future messages.

In Outlook 2016, the Zoom button is on the Format Text ribbon.
Outlook2016 button button on compose

In Outlook 2010 and 2013, the Zoom button is on the Message tab when composing (or reading) a message.

When the font is smaller (or larger) than the font size indicates, click the zoom button to change

  1. Open a new message
  2. Click the Zoom button on the ribbon
  3. Change the zoom to the desired level
  4. Close the message.
  5. Click new message (or reply) and the zoom should be the desired level.
 

Tools

Zoom Email Windows

The Zoom Email Windows tool for Outlook automatically zooms all Outlook reading pane windows. It zooms every Outlook window to your specified zoom factor. It's perfect for being able to instantly and clearly see the email and other Outlook windows.

 

Zoom in either Open Messages or Reading Pane

While the zoom level is persistent when you change it in the compose mail window, it's not persistent when you change it for incoming messages.

This macro requires the use of Redemption (Developer Edition).

You need to set a reference to the Microsoft Word Object Library in the VBA's Editor. It's under Tools, References. If it's not set, you'll get a Compile Error: User-defined type is not defined.

To use with the reading pane, you need to disable conversation view.

See "How to use Outlook's VBA Editor" for instructions and screenshots.

Option Explicit
 Dim WithEvents objInspectors As Outlook.Inspectors
 Dim WithEvents objOpenInspector As Outlook.Inspector
 Dim WithEvents objMailItem As Outlook.MailItem
 Dim WithEvents myOlExp As Outlook.Explorer
 Dim sExplorer As Object
 Dim Document As Object
 Dim Msg

'Sets the zoom to the same value
' To use different values, replace msgzoom with the number
' in openinspector and selectchange macros
 Const MsgZoom = 200

Private Sub Application_Startup()
 Set objInspectors = Application.Inspectors
 Set myOlExp = Application.ActiveExplorer
 Set sExplorer = CreateObject("Redemption.SafeExplorer")
 End Sub

Private Sub Application_Quit()
 Set objOpenInspector = Nothing
 Set objInspectors = Nothing
 Set objMailItem = Nothing
 End Sub

Private Sub objInspectors_NewInspector(ByVal Inspector As Inspector)
 If Inspector.CurrentItem.Class = olMail Then
 Set objMailItem = Inspector.CurrentItem
 Set objOpenInspector = Inspector

End If
 End Sub
 Private Sub objOpenInspector_Close()
Set objMailItem = Nothing
 End Sub

Private Sub objOpenInspector_Activate()
Dim wdDoc As Word.Document
 Set wdDoc = objOpenInspector.WordEditor
 wdDoc.Windows(1).Panes(1).View.Zoom.Percentage = MsgZoom

End Sub

Private Sub myOlExp_SelectionChange()
On Error GoTo ErrHandler:
 Set Msg = Application.ActiveExplorer.Selection(1)
 Application.ActiveExplorer.RemoveFromSelection (Msg)
 Application.ActiveExplorer.AddToSelection (Msg)
 sExplorer.Item = Application.ActiveExplorer
 Set Document = sExplorer.ReadingPane.WordEditor
 Document.Windows.Item(1).View.Zoom.Percentage = MsgZoom
Exit Sub

ErrHandler:
    Exit Sub

End Sub

Zoom in Reading Pane or Open Message Video Tutorial

Not shown in the video: You need to set a reference to the Microsoft Word Object Library in the VBA's Editor. It's under Tools, References. If it's not set, you'll get a Compile Error: User-defined type is not defined..

Set the Zoom Level in Open Messages

You can use VBA to force the zoom level when you read incoming email in Outlook 2007 or newer, or when using Outlook 2003 with Word set as the email editor. Don't forget to set the desired zoom level in this line:
wdDoc.Windows(1).Panes(1).View.Zoom.Percentage = 150

This macro goes in ThisOutlookSession.

You need to set a reference to the Microsoft Word Object Library in the VBA's Editor. It's under Tools, References. If it's not set, you'll get a Compile Error: User-defined type is not defined.


Option Explicit
 Dim WithEvents objInspectors As Outlook.Inspectors
 Dim WithEvents objOpenInspector As Outlook.Inspector
 Dim WithEvents objMailItem As Outlook.MailItem
 

Private Sub Application_Startup()
 Set objInspectors = Application.Inspectors
 End Sub
 

Private Sub Application_Quit()
 Set objOpenInspector = Nothing
 Set objInspectors = Nothing
 Set objMailItem = Nothing
 End Sub
 

Private Sub objInspectors_NewInspector(ByVal Inspector As Inspector)
 If Inspector.CurrentItem.Class = olMail Then
 Set objMailItem = Inspector.CurrentItem
 Set objOpenInspector = Inspector
 
 End If
 End Sub

Private Sub objOpenInspector_Close()
 
Set objMailItem = Nothing
 End Sub
 

Private Sub objOpenInspector_Activate()
 
Dim wdDoc As Word.Document
 Set wdDoc = objOpenInspector.WordEditor
 wdDoc.Windows(1).Panes(1).View.Zoom.Percentage = 150
 
End Sub

Zoom Macro Video Tutorial

How to use the macro

First: You will need macro security set to low during testing.

To check your macro security in Outlook 2010 and up, go to File, Options, Trust Center and open Trust Center Settings, and change the Macro Settings. In Outlook 2007 and older, it’s at Tools, Macro Security. If Outlook tells you it needs to be restarted, close and reopen Outlook. Note: after you test the macro and see that it works, you can either leave macro security set to low or sign the macro.

Now open the VBA Editor by pressing Alt+F11 on your keyboard.

To use the macro code in ThisOutlookSession:

  1. Set your macro security to Low in File, Options, Trust Center, Trust Center Settings, Macro Settings.
  2. Open the VB editor using Alt+F11
  3. Expand Project1 and double click on ThisOutlookSession.
    paste code in thisoutlooksession
  4. Copy then paste the macro into ThisOutlookSession. (Click within the code, Select All using Ctrl+A, Ctrl+C to copy, Ctrl+V to paste.)
  5. Set a reference to Microsoft Word in Tools, References
  6. Click in the Application_Startup macro and press the Run button to kick start it without restarting Outlook.

Application_Startup macros run when Outlook starts. If you are using an Application_Startup macro you can test the macro without restarting Outlook by clicking in the first line of the Application_Startup macro then clicking the Run button on the toolbar or pressing F8.

More information as well as screenshots are at How to use the VBA Editor.

Adjusting Outlook's Zoom Setting in Email was last modified: October 2nd, 2023 by Diane Poremsky
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About Diane Poremsky

A Microsoft Outlook Most Valuable Professional (MVP) since 1999, Diane is the author of several books, including Outlook 2013 Absolute Beginners Book. She also created video training CDs and online training classes for Microsoft Outlook. You can find her helping people online in Outlook Forums as well as in the Microsoft Answers and TechNet forums.

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Damir Grubisa (@guest_220649)
October 3, 2023 10:52 am
#220649

In the latest ver of M365 Cloud, this zoom function is moved over under "Format text."

Regards

Damir
g4ns.com

2023_10_03_10_50_50_Mouse_Highlight_Overlay.png
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Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  Damir Grubisa
October 4, 2023 9:28 am
#220652

It depends on which window you are in - if composing it is in Fornmat Text, if reading, it is in Messages tab.

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Reply
Satish (@guest_219263)
May 5, 2022 12:58 am
#219263

Hi Diane, GM.

How to change the size of attachment icons in the Outlook 2019

Whenever someone sends the email or I send with attachment, then that respective attachment icon appears too big in the email
It would be nice if the width of the attachment box could be reduced.

Att: Attached image for your reference.

Thankyou,
KSk.

image_2022-05-05_102407167.png
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Diane Poremsky(@diane-poremsky)
Author
Reply to  Satish
May 5, 2022 11:11 pm
#219268

Unfortunately, it can't be changed. Sorry. We can't even hide the attachment line, like we could in older versions.

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Reply
Satish (@guest_219254)
May 2, 2022 12:06 pm
#219254

Hi Diane, Really Nice code snippet Working charm with keyboard selection changes (up & down). Whether this can be modified with Single click option (mouse click). if so, pl help.   Thank you.      

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Diane Poremsky(@diane-poremsky)
Author
Reply to  Satish
May 2, 2022 10:16 pm
#219257

No, not to my knowledge. Sorry. 9But I'll take a look at it again, just to be sure.)

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Reply
Vic Manohar (@guest_218902)
November 21, 2021 10:18 am
#218902

Outlook 2003 with Word set as default editor.Conversation view disabled. References set as indicated. Redemption in use. Still get a Compile error: User-defined type is not defined. The VBA does not show up in the Macro list either. Any ideas?

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Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  Vic Manohar
May 2, 2022 10:17 pm
#219258

What version of Outlook are you using? Which line is it dying on?

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Reply
CraigC (@guest_218746)
September 27, 2021 10:15 am
#218746

I have been using Diane Poremsky's VBA code to change the zoom level in Outlook messages for a long time. I love it and it worked flawlessly. I recently upgraded to Office 2019 and every time I start Outlook, the Redemption user agreement appears and needs to be completed to open Outlook. Any thoughts on how to suppress this?
Thank you.

Craig

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Diane Poremsky(@diane-poremsky)
Author
Reply to  CraigC
September 28, 2021 1:17 am
#218749

I get that dialog often - not every restart though. I'll ask Dmitry why its happening.

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Reply
CraigC (@guest_218768)
Reply to  CraigC
October 4, 2021 10:01 am
#218768

Hi Diane - did Dmitry have any ideas?

Craig

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Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  CraigC
October 4, 2021 10:08 pm
#218769

I'll shoot him another email - I asked him about it in a thread about another issue and he might have missed it.

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Reply
Stacy Brown (@guest_218743)
September 24, 2021 12:54 pm
#218743

I've been using this code for years and love it but it has suddenly stopped working. We are using Outlook 2016 (16.0.5182.1000) 64 bit. I've got my Word reference set and Macros set to allow them to run. I can manually run it but it will only works for one email and then the zoom reverts back to 100%. Anyone else seeing this?

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Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  Stacy Brown
September 24, 2021 9:59 pm
#218744

No error messages? Comment out all error handler lines and set VBA to "Break on All Errors" = this is in Tools > options. This should give us an idea where its failing. (fingers crossed)

Last edited 2 years ago by Diane Poremsky
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Reply
Stacy Brown (@guest_218745)
Reply to  Diane Poremsky
September 27, 2021 9:53 am
#218745

Set to break on all errors and no error handling in the code. Still no error messages. It's like the Private Sub Application_Startup macro isn't running at all. If I go in and manually run it then the zoom does work for that session of Outlook. If I close Outlook and reopen, then the Zoom is back to 100.

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Reply
Kolos (@guest_217813)
March 24, 2021 6:38 am
#217813

OMG! The first option of "remember my preference" when setting the zoom worked! Is this a new addition? I remember a few years ago the only way to achieve this was through the VBA code option (which is what I googled and how I ended up on this page). Thank you so much, saved me a lot of hassle.

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Reply
Diane Poremsky(@diane-poremsky)
Author
Reply to  Kolos
March 24, 2021 8:13 am
#217814

It is new to Outlook - first added to Outlook 365 in late 2018.

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0
Reply
Monica Angelova (@guest_217806)
March 22, 2021 8:47 am
#217806

Thank you so much,, it worked !

0
0
Reply

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