The vast majority of our audiences are office/corporate-users, and as such have high speed internet connections. We usually recommend keeping ads below 150 KB in size, and this includes all progressive video, .JPGs, and animated .GIFs.
If you are providing 3rd party creative tags, we cannot accept them if the initial load of the creative is more than 300KB.
MessageSpace sites utilise the HTTPS protocol. Please ensure all tags supplied are secure.
Video ads that don’t automatically play should be under 500 KB (teaser videos).
Please note that we never allow videos to play with the sound turned on automatically.