Are MailerLite newsletters responsive?

Yes, all MailerLite templates are responsive!

Responsive email design is built using media queries. However, there are different mail applications, and not all of them support media queries on mobiles.

Which popular mail applications support responsive design and which don’t?

Please find the list below:

iOS Android
Native client YES YES
Gmail app YES YES
Inbox by Gmail app YES YES
Yahoo Mail app YES YES
Outlook app YES YES
Mail.Ru app NO NO
Yandex.Mail app NO NO