If you are a large enough business consider ZoomInfo

I have used ZoomInfo InboxAI at a previous job and liked it very much. It's simple to use and proved very good information. At my current job, I used ZoomInfo InboxAI as a trial but was unable to justify the cost based on the number of contacts a month that I would require. We send out e-mails to potential prospects and need a way to either locate their e-mail and/or phone number. ZoomInfo InboxAI provides the details we require.