How do these templates handle email forwarding?

When many email clients forward an email, all styles in the document head are removed, which breaks emails that have not inlined their styles.

How does these templates handle responsiveness?

Handling responsiveness and still looking good in MSOutlook can be tricky.

Have these been tested using Litmus? I did not see any images of these templates in email clients.

I have done a bunch of work on emails, and found that building html emails that look good and render well on all popular email clients while staying responsive is tricky