Closing email with “thanks” gets the most replies
This is an excellent example of why inferring causation from an observed correlation requires great care. Note that the study did not randomly assign valedictions to emails and observe the causal impact on response rate. Rather, they observed a correlation between the sign-off chosen and the response rate."Thanks" garners many responses because people use it in emails that make reasonable requests with a good chance of response.My favorite valediction is still "I am, &c.," which is short for "I am your humble and obedient servant". Not sure whether my colleagues appreciate it as much as I do...