“Unlimited” is the most carefully lawyered word on any pricing page. It's printed in big friendly type and qualified in small grey type, and the gap between the two is where a lot of software business models live. Before you trust an unlimited, it's worth knowing the four asterisks it usually carries.
The four asterisks.
Unlimited, but fair-use. The most common one. Unlimited until an undefined “reasonable” threshold the vendor defines after you've crossed it. Useful as marketing, useless as a guarantee.
Unlimited X, metered Y. Unlimited users! (but you pay per project.) Unlimited projects! (but you pay per contact.) The unlimited thing is always the thing that costs the vendor nothing; the meter is on whatever actually scales with your usage.
Unlimited on the top tier only. Unlimited exists, technically, on the plan priced so that “unlimited” and “enterprise sales call” mean the same thing.
Unlimited, throttled. No hard cap, just a soft one — it gets slow, or features quietly degrade, past a point nobody documents.
Read “unlimited” as a question, not a promise: unlimited what, exactly, and what's the meter you're not looking at?
Why the word is so abused.
Because “unlimited” sells. It removes the anxiety of metering at exactly the moment of purchase, which is precisely when the vendor wants your anxiety lowest. The asterisks live in the contract, not the headline, because the headline's job is the sale and the contract's job is the margin. None of this is illegal. Most of it isn't even dishonest, technically. It's just a word doing more work than words should.
What an honest unlimited looks like.
An honest unlimited is specific about was is unlimited, has no hidden meter on the thing that actually scales, and is available on a plan a normal team can afford. When we say the Agency plan has unlimited users, we mean the count of users genuinely doesn't change your bill — because we don't charge per seat at all, so there's no meter hiding behind the word. The honesty test for any unlimited is simple: is there a meter somewhere else that makes the unlimited claim technically true and practically irrelevant?
Unlimited can be a real promise. It just usually isn't, and the difference is always in the grey type. Read the asterisks, find the meter, and you'll know in thirty seconds whether the big friendly word means anything at all.