Mineral owners — especially recent heirs — get letters. Some include a check ready to deposit; most include a deadline. Here is what the letter actually tells you, and the sequence that converts it from pressure into information.

Why you got the letter

Buyers research county records, probate filings, and permit activity to find owners before value becomes obvious. A letter means someone ran the numbers on your interest and concluded it is worth owning — at their price. The work they did is real; the asymmetry is the business model: they know what your minerals are worth, and they are counting on you working from less.

The five steps

  1. Set the letter aside — deadlines in mailbox offers are marketing.A buyer who genuinely wants your interest today will want it next month. Enclosed checks and “offer expires” language exist to shortcut exactly the steps below.
  2. Gather your documents. Last three royalty check stubs, division orders, and the deed or probate paperwork. Ten minutes of gathering makes every later conversation concrete.
  3. Get a first read on value. Our value calculator turns your check stubs into a possible range and shows where the offer lands inside it — above, inside, or below.
  4. Find out what is happening around your minerals. New permits, rig activity, or operator consolidation near your tract are precisely what the buyer saw first. This is where a consultation with someone who underwrites interests daily earns its keep — upside is the part of value a check stub can least show.
  5. Let buyers compete before you commit. One offer is a number; several offers are a market. A listed interest shown to many vetted buyers finds its actual price — and you keep the right to take the original offer if it really was the best one.

If you decide to respond

Respond on your terms: thank them, say the interest is being evaluated, and invite their best number in writing. A buyer’s first letter is their opening position — treating it that way is the whole game.

Is an unsolicited mineral offer legitimate?

Usually it is a real company with real money — the letter itself is rarely a scam. The catch is the number: industry sources across the market report first offers commonly landing 20–60% under what a competitive process achieves. Legitimate and generous are different things.

Does an unsolicited offer mean my minerals are about to be developed?

Often, yes — buyers target areas where they expect activity: new permits, offset drilling, or operator consolidation. The offer arriving now can be a signal that your minerals are becoming more valuable, which is the strongest reason to learn the value before selling at yesterday’s price.