Paragraph spacing has more than doubled with the new Xfinity email format. Why? It looks ridiculous! Moreover, there seems to be no way for the user to change it. If Comcast is not going to fix this –– and from all indications, they're not –– it would be nice if the user could opt out of the new format. The old was far better. Any ideas?
Probably your best bet is to enable the account in a desktop email program like Outlook or Thunderbird, Mac Mail etc. That way you use the formatting abilities of the client and not the webmail UI. And no, there is no way to change line spacing in the webmail.