hile Klaviyo's email builder is very okay, I have come to find some specialized email building tools that focuses majorly on email designing and I have been using these tools (mainly stripo and BeePro) to design my emails and I have had some beautiful email templates created. 

However, I noticed that when I moved my templates over to Klaviyo, they were only rendered in HTML and can only be edited in HTML. I don't have no knowledge of HTML so this has been a very big issue for me.

Although, for me, I could have said this is still fine as I can just completely design my email using these tools and just simply move them over to Klaviyo for sending but then, I am a freelancer and I only work mainly with Klaviyo.

I can't design templates that will require my clients to be editing it's html codes if they want to reuse it and not all of them will have stripo or BeePro account where I could design the templates and save it there for them to be editing and exporting to Klaviyo when they need. 

What can I do? How can I design emails outside of klaviyo and still move it over to Klaviyo with it still being completely editable? 

P.S. I have tried creating these complex designs with Klaviyo builder but it's just been hard and I find the third-party builders much easier to use.