How to Ensure Leads Haven't Been Contacted Before from Another List?

What’s the best way to make sure the leads in my list haven’t already been contacted from another list? thanks!

· Sorted by Oldest

Preeti M.
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Run a lookup against your email sequencer e.g. in Smartlead you can run lookup lead in campaign
Amit S.
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I think outbound tools have these settings.
Tim B.
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I've wondered this too, I know you can use a master spreadsheet for this as well, but I imagine the outbound tool should have it like Amit said

Preeti M.
·
·
Run a lookup against your email sequencer e.g. in Smartlead you can run lookup lead in campaign
Amit S.
·
·
I think outbound tools have these settings.
Tim B.
·
·
I've wondered this too, I know you can use a master spreadsheet for this as well, but I imagine the outbound tool should have it like Amit said