This is a question that many writers ponder, along with marketing teams.
Much of the advice for writers says, “Just send your query when you are ready. Don’t wait around.” To a degree that is true. Every literary agent is different.
But there are some times that are better for the general person than others. I checked out some findings from mass emailer websites about when people are most likely to open an email based on when you send it.
LEAST LIKELY TO GET CHECKED: Holidays and weekends.
MOST LIKELY TO GET CHECKED: Tuesday, Wednesday and Thursday. Late morning.
See more resources below:
Advice From Literary Agents
Best Time to Send to a Literary Agent? (Literary Agents)
Seven Submission Tips From a Literary Agent’s Slush Pile (Well Storied)
Studies on Emails