A user with Account Access permissions can set the default font size, color, and size for all emails sent from a record in the CRM. Set the default to ensure that every CRM email sent from your account is consistent in style and appearance. The default font settings apply to every email sent from the CRM and cannot be adjusted on a per-email basis.
Please note: the default fonts set here do not override the fonts used in templates, snippets, CRM email signatures, or marketing email default fonts. If you use the quick reply editor to respond to a visitor in the conversations inbox, the default font will not apply.