Be direct about what you want in your subject line.
Not everyone will read the entire InMail message, Decembrele said, so aim to grab a potential connection's attention with a punchy subject line.
Keeping a subject line to three words or less increases your chances of getting a response by 14%, according to LinkedIn data.
"Brevity's key," Decembrele said in an email. "And a little intrigue encourages the recipient to open the message to see more."
As in: "Looking to connect" or "Coffee soon?"