We once ran an ad campaign within 15 minutes of getting a phone call from a client. We lived to tell this story, but it shaved several years off our collective lifespans.
To ensure the best experience, we ask advertisers to supply all display creatives/tags at least 1 whole working day prior to going live, and any editorial/sponsored posts at least 3 working days prior to going live.
Sponsored editorial/posts require approval from publishers, and we cannot always guarantee quick turnarounds.
Your MessageSpace account manager will be better able to advise you, so get in touch with them directly.