Is there a need for a Graphic design app for emails?

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Hi Guys, we have ceated an app that is kindoff like a Photoshop-like app for emails called Zenduz. You can design professional looking emails for you or your clients.

What we want to know is, is there a need for such a service.

Please check it out at www.zenduz.com and if you want to use it for free, please send your email address to studio@zenduz.com with your promocode: FREEDUZ2017

I hope to hear from you soon as time is limited when it comes to the finalizing of this app.