Outlook: the font size reduce when replying to an email

Question

Outlook: the font size reduce when replying to an email

JH 0

The font automatically reduced when I click "reply" or "reply all" responding to an incoming email. And the font in my sent email is backed to normal (not reduced) when I check my sent email. How to reset this to the same font throughout (i.e. incoming mail, preparing a response, and sent mail)?

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Gregory Tappan 0 Reputation points

2026-09-09T13:32:07.36+00:00

I've tried all of these options from online. None of my options in my drop down menus match this and none of this has worked. can I please speak to someone to resolve this?
Hornblower409 16,350 Reputation points

2026-09-10T04:48:47.6033333+00:00
@Gregory Tappan said

None of my options in my drop down menus match this

Probably because you are using a different Outlook Client.

You will not get any help for your issue by adding to an old post. You must start a new thread using the "Ask a question" button at the top of this page to create a new Question and include the details for your specific problem and which Outlook client you are using.

If you use:

A web browser (Chrome, Edge, Firefox, Safari, etc.) -> You have "Outlook Web"

A Mac -> You have "Outlook for Mac"

A phone or tablet -> You have either Outlook for Android or Outlook for iOS (iPhone, iPad)

A Windows PC and if you click "File" on the Outlook Main Menu:

You see an "About Outlook" choice -> You have "New Outlook for Windows"

You see an "Options" choice -> You have "Classic Outlook for Windows"

1 answer

Gregory Tappan 0 Reputation points

2026-09-09T13:32:07.36+00:00

I've tried all of these options from online. None of my options in my drop down menus match this and none of this has worked. can I please speak to someone to resolve this?
Hornblower409 16,350 Reputation points

2026-09-10T04:48:47.6033333+00:00

@Gregory Tappan said

None of my options in my drop down menus match this

Probably because you are using a different Outlook Client.

You will not get any help for your issue by adding to an old post. You must start a new thread using the "Ask a question" button at the top of this page to create a new Question and include the details for your specific problem and which Outlook client you are using.

If you use:

A web browser (Chrome, Edge, Firefox, Safari, etc.) -> You have "Outlook Web"

A Mac -> You have "Outlook for Mac"

A phone or tablet -> You have either Outlook for Android or Outlook for iOS (iPhone, iPad)

A Windows PC and if you click "File" on the Outlook Main Menu:

You see an "About Outlook" choice -> You have "New Outlook for Windows"

You see an "Options" choice -> You have "Classic Outlook for Windows"

Answer 1

Dear JH,

Thank you for reaching out to Microsoft Q&A forum. I am sorry to hear about your problem with font size when replying to email in Outlook

Here are a few steps to help you troubleshoot the issue:

1. Disable Plain Text Mode When Replying

Sometimes, incoming emails are in plain text format, which can cause the font to appear smaller when replying.

Open Outlook --> Settings --> Mail --> Compose and reply --> Message format --> switch HTML--> Save

2. Check Zoom Settings

Your browser’s zoom level may affect how fonts appear.

Go to Outlook --> View --> Zoom --> Set 100%

3. If you are using Outlook desktop app, try the step

File-->Options-->Mail-->Stationary and fonts

4. Uninstall Outlook and then reinstall: Sometimes when you re-install app, it will help solve your problem.

To better understand the issue, could you please send a screenshot comparing:

The font size when replying to an email
The font size in the sent email

If the issue persists, please don’t hesitate to reach out to me again. I’m always here to help you.

PS: If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Emma1-N 13,430 Reputation points Microsoft External Staff Moderator

2025-10-22T10:22:02.24+00:00

Hi JH,

I am checking to see if you've had a chance to read and try the steps provided in my answer. Please let me know if you need any further assistance. We look forward to your response.
Emma1-N 13,430 Reputation points Microsoft External Staff Moderator

2025-10-30T08:51:39.5733333+00:00

Hello JH,

Could you please let us know if your issue has been resolved or if you are still experiencing the difficulties?