Under Settings>Notifications, you can customize which types of notifications you want to be delivered to your phone. The image below is the default for notifications, with blocked notifications disabled.
Missed calls - when a call rings your phone but you are unable to answer
Voicemails - when a caller leaves you a voicemail
Text Messages - when a contact sends you an SMS or MMS
Blocked/Spam Calls - when a call identified as Spam is blocked by SwitchUp
Blocked/Spam Text Messages - when a text identified as Spam is blocked by SwitchUp