My first comment may have been a bit confusing. What I asked about were the links insider the Newsletter; The stuff Tom is referencing. They are usualy stuff like this: https://clicks.aweber.com/y/ct/?l=pR_drn&m=ftZOJIimVNMcQMQ&b=oF1nuW28Y3wbKseYeTJePg
No idea what this is exactly but a quick online search says it’s tracking.
Could you please elaborate on your last sentence? What do you mean with “errors […] after some time if your network is denylisted”? I am using RiMusic and I indeed run into weird errors where the music stops in the middle.