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How do I increase the font size in addresses and subject on e-mails

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Yesterday I upgraded from Windows 7 to Windows 10 and now the font size on my addresses and subjects of my Thunderbird e-mails is smaller; therefore, more difficult to read. The font style and size of the e-mail text is O.K. meaning it is what I had set it at in Thunderbird under Windows 7. How do I increase the font size of the addresses and subject?

Yesterday I upgraded from Windows 7 to Windows 10 and now the font size on my addresses and subjects of my Thunderbird e-mails is smaller; therefore, more difficult to read. The font style and size of the e-mail text is O.K. meaning it is what I had set it at in Thunderbird under Windows 7. How do I increase the font size of the addresses and subject?

الحل المُختار

I have an installed add-on called the Theme Font and Size Manager, but I cannot figure out how to use it. Nothing under tools or add-ons allows me to do anything except disable it.

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There's an add-on called Theme Font and Size Changer which l think will do what you want.

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الحل المُختار

I have an installed add-on called the Theme Font and Size Manager, but I cannot figure out how to use it. Nothing under tools or add-ons allows me to do anything except disable it.

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With the Theme Font and Size Changer add-on, I have a large "Theme Font and Size Changer" button on the Mail Toolbar. When I left-click on this button, a window opens in which the options for the add-on can be set, including the Font and Size for the folder pane and message list.

To get to the Help page for this add-on, go to Add-ons / Extensions and click on "More" in the line for Theme Font and Size Changer.

I don't know whether "Theme Font and Size Changer" is the same as "Theme Font and Size Manager".

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Will the same directions work for a MAC??

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fuddcat said

Will the same directions work for a MAC??

The Help page does not mention Windows or Mac, which presumably means that the add-on works the same way on either platform.

I do not have a Mac on which to try it.