Best Client-Facing CRM and Lead Notification Methods for Outbound Agencies Generating Local Business Leads

attention: elite outbound agencies doing lead gen for local businesses once you have a lead respond as positive, what client-facing CRM/dashboard are your clients using to work the leads you generate? For example, GHL sub-account where you webhook/zap the interested leads information into the GHL sub-account, directly into the client's own CRM, or better way? How are you notifying your clients as soon as a PR comes in for them to call and work the lead to get the meeting booked? One idea I had was a GHL sub-account where client gets a text when a qualified lead comes in. This is for our package where we generate the leads for the clients then they book the lead in, not for clients where we do full-appointment setting