An addendum to the earlier post about using tokenized image URLs like https://pages.example.com/rs/123-XOR-456/images/{{Lead.Sales Owner Email Address}}-med.png — which throw an error in Email/LP Editor by default.
You’ll recall the almost-too-obvious solution is to upload an image to Design Studio that’s literally called https://pages.example.com/rs/123-XOR-456/images/{{Lead.Sales Owner Email Address}}-med.png (with the curly braces in the filename!).
But you’ll have a problem, at least on Windows, if you also try to use :default= syntax for a fallback image, like https://pages.example.com/rs/123-XOR-456/images/{{Lead.Sales Owner Email Address:default=no-owner-fallback}}-med.png.
The solution, again, would be to upload an image with that literal name, including the = sign and the : colon in the filename. But you can't create an image with that name from Windows, since the colon is reserved:
But you can create the image via the Assets/Files API with the colon in its name. Weird, but it works. Since it only has to be done once, it’s worth involving your developer (or developing your Postman skills).