Studies done by various organisations greatly vary. However, in general, it is suggested to send your emails between 9:00 and 11:00 AM. This is because most office hours begin during this time, and people make it a habit to check their emails as their first task in the office.

When should I send an email?

The optimal times to send emails by the hour of the day tend to be in the late morning. Not too early, but not too late. Make sure not to send your emails too early and risk getting lost in a junk-filled inbox. But don't send them too late either, or people will likely be commuting home from work.

When should you send a professional email?

When might you need to send a professional email? There are a number of possibilities. You might need to send your cover letter to a potential employer, a thank-you letter to a colleague who agreed to be a reference, a resignation letter to your current boss, or a request for a letter of recommendation.