You get that e-mail as an additional security measure. It lets you know when someone logs into your account.
What you could do is to stay logged in for longer periods.
Most e-mail providers nowadays lets you add a filter that automatically moves all e-mails from @lfs.net to a specific folder. Though its most recommended to just delete them as they're quite useful in my opinion.
So basically i was like asking help in the LFS dc server in Programming channel then i saw this code by mkapal https://github.com/mkapal/lfs-ai/tree/master allows you to control a AI car in singleplayer at first it was really good feature then i went to try it in the muiltplayer guess what it gave me this error IS_AIC - not available in DEMO i understand why devs locked it but imo it should be allowed for demo users as well it can open tons of ideas like cruisers and custom ai paths etc i may be wrong but that just my opinion