i don't know man.... this sounds yet another service to subscribe to for what benefit?

i have been selfhosting on racknerd for like last 2 years and beyond the first month, i have been pretty much put it on auto mode.

i use mailinabox so i get to use roundcube and it has a banner

"To protect your privacy remote resources have been blocked."

this is by default for all links and images unless i explicitly allow someone so isn't that the same thing?