I created an email which looks great on a desktop but it's not working on the mobile. Is there a way to make the email responsive to work on a mobile as well? I found where a landing page can be responsive, but haven't found where an email can. Please advise. Thanks!
yes indeed. Emails can be responsive too. However there is many things that work different for email clients that for web browsers.
You should consider getting in touch with an expert on email coding. Even a front end developer cannot get everything right straight away, as most email clients render and accept styling differently.
If you want to get in the trenches, look for resources on the web. Possibly with some email testing platforms such as Litmus. e.g. Understanding Media Queries in HTML Email | Litmus Blog
But it's gonna take time. Good luck.