PostEaseThe short answer
Whitelisting is an arrangement where a creator grants a brand permission to run paid advertising directly through the creator's own account. The ad appears to come from the creator's handle, using their engagement history and audience trust, rather than running from the brand's account. It is a deeper arrangement than a standard sponsored post, since it gives the brand ongoing access to run and target ads through that account.
Why a brand values this beyond a normal partnership
An ad running through a creator's own account blends more naturally into a feed than an ad clearly running from a brand account, and it can be targeted the way any paid ad can be. That combines a creator's organic credibility with a brand's paid targeting and budget, rather than choosing one or the other.
This needs its own explicit terms, separate from a standard sponsorship
Whitelisting grants a brand real access to run ads through an account, so the terms need to be negotiated explicitly: how long access lasts, what content can be used, how much creative control the creator retains, and separate compensation for the access itself. None of that is covered by a standard one-off sponsored post agreement.