Isn't their HTML/CSS support atrocious? I mean, it might be a bit better than Outlook, but as far as HTML emails are concerned, it's more mobile browsers which

Isn't their HTML/CSS support atrocious? I mean, it might be a bit better than Outlook, but as far as HTML emails are concerned, it's more mobile browsers which have made it actually usable again: https://www.campaignmonitor.com/css/email-client/gmail/ https://www.campaignmonitor.com/css/email-client/gmail/