I’ve Been Hiring People for 10 Years, and I Still Swear by a Simple Rule: If Someone Doesn’t Send a Thank-You Email, Don’t Hire Them. Posted byJessica Liebman April 8, 2019 Leave a comment on I’ve Been Hiring People for 10 Years, and I Still Swear by a Simple Rule: If Someone Doesn’t Send a Thank-You Email, Don’t Hire Them. The executive managing editor of Insider Inc. has hired hundreds of people over 10 years.