Are MailPoet Emails Responsive?
This article refers to MailPoet 2
If you're looking for MailPoet 3 articles, please go to MailPoet 3 Knowledge Base
MailPoet emails are "mobile friendly", but not fully responsive.
For example, on Gmail app they will appear zoomed out.
Rest assured, the upcoming version of MailPoet already has responsive emails. You can preview them here: http://demo3.mailpoet.com/launch/