Just so everyone knows. They will have to copy and paste the command "wallet.relayfee = (lambda: 0)" into the console every time they run Electrum and connect to a server to make below 1 sat/vByte transactions. That's how it is at least for now.
I just wrote the smallest Electrum plugin ever that just runs this command at start.
https://files.ninjastic.space/relayfeezero-0.0.1.zipTools -> Plugins -> Add -> Select the zip and install.
How to verify I'm not stealing your coins: Just open the ZIP and read the qt.py file. It is a 7 lines very small code which anyone can read and understand.

I thought the installation procedure for Electrum on OSX was to first extract the zip, then copy the resulting folder to Electrum's plugins folder
(/Applications/Electrum.app/Contents/MacOS/electrum/plugins according to the Electrum console output of electrum.plugins.__path__) along with the rest of
themthe plugins' respective folders... but when I restart Electrum & open Tools>Plugins, despite being in
thethat top-level plugins folder, yours doesn't appear in the list & there's no add option.
(v4.5.8 & I cannot safely upgrade to a higher version of Electrum without buying a new computer)