Generate likely email combinations from first/last/domain.
First name, last name, domain (the part after the @). Accents are normalised — don't worry about typing André vs Andre.
The classic Rob Ousbey 24-pattern matrix — first.last, f.last, firstl, etc. — in a grid you can copy in bulk.
Pair with Hunter, NeverBounce, or Phone Number Validator — Permutator generates candidates, validation confirms which one delivers.