My company used Seamless AI and Hunter.io, but I found Apollo.io more affordable based on the number of leads it gives versus what other products provide. Apollo.io has around one hundred fifty industries you can target, so it has a more extensive lead database than other products. The tool also has a more user-friendly interface and is easy to use versus other tools. You first need to learn how to use Apollo.io, which becomes pretty easy. Other advantages of Apollo.io over other products include more filters you can use to find your target audience. It also shows you verified emails and has mass email and cold call features which you can't find in other tools.