Please could you add more webfonts to drag-and-drop email templates?
Currently, only three webfonts are supported: Helvetica, Lato and Merriweather.
It would be great to have Open Sans, if possible! 
100% AGREE! Why is there not an easy way to add a Google font to HubSpot?
Upvoted! Great suggestion
Hi all!
Conor here from the Product Management team 
I wanted to share an update that custom fonts in the drag-and-drop email editor are now available in Public Beta! You can upload your custom font files to your Brand Kit, set a fallback font for email clients that don’t support webfonts, and then your custom fonts will appear in every font selector dropdown in the email editor.
Here’s the Knowledge Base article with everything you need to get started: Use fonts in HubSpot
This is available on all HubSpot tiers, including Free. It’s currently in Public Beta, so we’d love to hear your feedback as we continue to refine the experience.
Just a heads-up, custom fonts will display in email clients that support webfonts (like Apple Mail), while other clients (Gmail, Outlook, Yahoo) will show your chosen fallback font. This is an industry-wide email client limitation, not something specific to HubSpot.
Looking forward to hearing what you think!
Conor | Product Manager - HubSpot