What about the notification on the app itself? Is it not functioning well? Maybe you can play around with the settings in your phone and prioritize discord notifications. In my experience, the notification in discord or any other messaging app are much faster or more noticeable than the notification that we get in the email app.
If you are new in this signal using then best to not rely in all of their sharing because only few that will bring reliable and majority are just a pump and dump.
and why only in discord? there are lots of groups such as Telegram and facebook groups that you can at least check and find new .
but remember that never invest higher than you can afford to lose because they are not truly profitable .
The op might be new but that is the reason on why he rely on these signals but once he gain some experience then I think he will also exert an effort and work on his own. Experiencing a huge lose from relying someone else can also teach them a lesson and make them curse those kind of services resulting for them to study on their own. You ask why on discord? But why not? Discord is in fact more rich in terms of features than in telegram and facebook groups/messenger.