Central Search Bar (Better identify lead's email)

I would like to have a central SEARCH BAR feature. In there I can type emails, first names or company names of Leads and I immediately get suggestions of results (Campaign, Lead Database). The search bar should be "smart" enough to to match the suffix of the email with the corporate website's url and then suggest all leads with that email suffix. This would help me a lot, especially when my email is:

1. either forwarded to a colleague of the lead;

2. or the person replies with another email and I need to manually take out that lead from the campaign

Bonus: for 2., it would be super helpful and efficient if your "AI" can read the incoming email and match it to the lead's original email address (I guess this has something to to with phishing or whatevs but still). 1 in 10 emails is like that for me.