A platform in this category is a database with a screen and a set of connectors. The screen is what gets demonstrated and the other two decide whether it works. Four checks, and one honest case for not buying one at all.
What evidence does it store with a consent
The answer alone is not evidence. Ask to see a consent record from a year ago and check it carries the version of the notice that was shown, the timestamp, the channel and the actor. Platforms that store only current state cannot support the thing consent is for.
How do your systems read it
Push, pull, webhook or nightly file. This is the integration cost and it is where the project time goes. A platform whose connectors do not cover your actual sending tools is a second source of truth waiting to happen.
Does history survive a change
Change a preference in the demo, then ask to see what it was before. If the previous value is gone, the platform is a settings store rather than a record, and the whole reason to centralise was the record. Ask the same question about consents, where the answer matters more and is more often no.
What does leaving look like
Ask for an export of consents and preferences with their history, in a format you could load elsewhere. A platform that holds the evidence for your lawful basis and will not give it back cleanly is a risk rather than a control.
When not to buy one
One sending tool, one audience, no advertising audience uploads. At that size the CRM plus a change history does the job, and the platform adds integration work without removing any question you currently cannot answer.
Questions people ask about consent and preference management platform
Is this the same as a cookie banner tool?
No, though many vendors sell both. A banner captures consent for tracking on one site. A consent and preference platform holds the person-level record across every channel, which is a much larger claim.
How much should a small company pay?
Less than the cost of the integration work, which is usually the larger number. If the licence is small and the integration is six weeks, the integration is the decision.
What breaks most often after purchase?
The nightly sync, quietly. Ask how the platform tells you when a sync failed, because a preference store that is silently stale is worse than no store.