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when using a custom domain all links are using the custom domain which is good.
But the file urls of uploaded images still use the main domain. In my opinion the image urls should use the custom domains as well. I see that there might be a problem with SSL using the CNAME configuration but the better way is to point the A-Record of the custom domain/subdomain to the Sendy installation which enables SSL for the custom domains, too an which would solve the ssl problem for loading images.
btw: there should be subfolders inside /uploads for each custom domain to be able to remove all uploaded files in case of removing a custom domain account.
Thanks and best regards,
In the next version, source URLs of images uploaded through the WYSIWYG editor will use custom domain if it’s been set and enabled in the brand settings.
The new update 4.0.3 is now released, source URLs of images uploaded through the WYSIWYG editor will use the custom domain set and enabled in the brand settings.