Hi,
I agree with you all that it would be nice. But having an editor there is difficult. AcyMailing had to build one from scratch, and they spent a lot of time for it. It is something central to AcyMailing, so I can understand the need to spend all that time on this for them.
On our end, we can't realistically spend all that time on this and drop everything else for 1 year or more.
Also, Joomla 5.2 introduced email templates. And with HikaShop 5.1.3, a few months ago, we've added the integration to this system:
www.hikashop.com/home/blog/523-hikashop-5-1-3.html#email
On a website, you'll likely want to customize the Joomla emails anyways. So, if you can plug your HikaShop emails to the Joomla email templates, you then only have to customize the content of the email. Most of the modifications of the content are done with translation overrides, which don't require editing the email itself.
Also, more advanced customization requires adding PHP code (add some conditions of display, load extra data, format the data to be displayed), and this can't be done with an editor anyways.
Now, regarding the PDF invoice customization, while a WYSIWYG editor is not possible, integrating the plugin with the view editor (which has a drag&drop interface) of HikaShop is something we're looking into.
In fact, now that I'm thinking about it, maybe we could cook something with the view editor drag & drop system for the email content too... I have to think about it some more.
Thanks for your feedback.