Add Upfront Editor Mode link in Welcome Email

Hi,

I want to Add Upfront Editor Mode link in Welcome Email for new multisite emails.

I can edit the email, however, it seems impossible to link directly to editor mode.

After a user has logged in, then visited their site, they click the 'Upfront' button to enter editor mode.

However, this button is the website URL /#

Is the link tied up with Javascript?

Can the button/link be included in the multisite welcome email?

Cheers,

Johnny