How to solve font-related problems in email signatures
Fonts in email signatures are not correctly displayed.
The appearance and availability of a font in an email message depends on the client and device used to read this email. If fonts used in your email signature are not supported by the recipient's environment, these fonts are not displayed or they get replaced with other available fonts. This might be solved by installing your fonts in the recipient's environment, but not all fonts are supported on every platform. That is why it's better to avoid these problems by preparing your email signatures properly. You can:
If you want to make sure your email signatures are correctly displayed on all clients/devices, use only the most common fonts (known as web safe fonts). These fonts are supported in the majority of environments. The following fonts are known as safe to use:
Arial, Arial Black, Gadget, Comic Sans MS, Impact, Charcoal, Lucida Sans Unicode, Lucida Grande, Tahoma, Geneva, Trebuchet MS, Verdana, Courier New, Lucida Console, Times New Roman.
To protect your signature against situations where a font is missing on the recipient's platform, you can define one or more fallback fonts - they will be used if the primary font is missing. You can add fallback fonts in the HTML source of your signature. See this article if you are using CodeTwo Email Signatures for Office 365 or this article if you are using CodeTwo Exchange Rules to learn how to access the HTML source view in the signature template editor.
In the HTML source code, find an element (e.g. a paragraph) that you would like to modify, and add the following style attribute in the start tag:
style="font-family: font-name1, font-name2, font-name3;"
where font-name1 is the name of your primary (default) font, font-name2 is the secondary font (it will be used if font 1 is missing), and so on. You can add as many fonts as you like and set their priority by putting them in order. Make sure that you provide the exact font name as displayed in the font file (see Fig. 1.). Do not omit any spaces, hyphens, etc.
This is how the HTML code of a paragraph looks like if three fallback fonts are used and the font size is 10 points:
<p style="font-family: Myriad Pro, Open Sans, Arial;font-size:10pt;">This is a paragraph.</p>
And this is the end result:
This is a paragraph.
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