Hi @kylewhit,
Would you please share more information about which Email Action you used here?
If you are using the Office 365 Outlook Send An Email Action, then please click the Advanced option, there would be Is HTML available to select, set it to Yes, and then use the HTML tag to left-align the Email Body.
<p style="text-align:left;">
This text is left aligned
</p>
Reference:

If this is not the case, then please share a screenshot here, I will then help to take a look.
Regards,
Michael