Comment by deaddodo

> A unique connection per host isn't too bad. But I have 12 connections for each of my desktops and laptops and phones and tablets...

It's host<->host unique. So, assuming your email server allows enough keepalives, you're fine with multiple devices.

Where you might have an issue is if you have multiple accounts on the same server (not even the same service, necessarily; Gmail, hotmail, etc have a plethora of servers) and connect to them via the same device.