Apollo.io reports on methods to find email addresses using phone numbers, including Google searches, reverse lookup services, and B2B databases.

There are moments when you receive emails from different unknown resources. Most often, these emails are from unknown companies that ask for people’s personal details. So, it is always safer to use ...

Most of the e-mail cold calls I get are just plain old spam. No great mystery there - I just sweep those into the trash. But occasionally I get messages from real people without a lot of context.