Many campaigns show higher rates of response if sent at certain times and days of the weeks - an Australian retail campaign will produce TWICE the result if sent on a Tuesday morning V's a Thursday afternoon!!
Equally, read habits form if your email marketing campaigns are sent out on a consistent schedule. Do you get a "what's on this weekend" newsletter every Thursday?
Campaign Master provides scheduling to allow your campaigns to be sent when you choose - giving you the flexibility to work on campaign creation when you want knowing you have the flexibility to select the most effective time slot and then launch and forget.
You can also "un-schedule" and amend the campaign at any time - unless, of course, it's already been sent.