Mail vs cold calls vs texts: cost per conversation
By Josh MillerUpdated 5 min readCompare channels on cost per conversation with an owner who might sell, not cost per contact: mail costs about 70 cents a piece and reaches every owner with an address, while calls and texts cost less per attempt but only reach owners whose numbers you can find and who answer. Texting adds federal consent rules that make cold marketing texts risky, so most investors run mail and calls together on the same list.
Every investor argues about mail versus cold calling versus texting. The argument goes better with one number: what it costs to have a real conversation with an owner who might sell.
The math for each
Cost per conversation = cost per attempt, divided by the share of attempts that turn into a conversation. The second number is yours to measure, by list. Here's what goes into each:
| Direct mail | Cold calling | Texting | |
|---|---|---|---|
| Cost per attempt | About 70 cents a piece, all in | Skip tracing, plus dialer and caller time | Skip tracing, plus messaging platform |
| Who you can reach | Almost every owner, by mailing address | Owners with a number you found that connects | Owners with a cell number you found |
| Who starts the conversation | The owner calls you, when ready | You, when they pick up | You |
| Legal rules | Few (no fake notices or checks) | Do Not Call list, state calling rules | Federal TCPA consent rules, plus state laws |
| Best for | Reaching the whole list, repeatedly | Speed on lists with good numbers | Owners who already gave consent |
Reach is the hidden cost
Mail goes to every owner with a mailing address, which is nearly all of them. Calls and texts only reach owners whose phone numbers you can find, that still work, and that aren't on do-not-call lists. If half the list never gets a call, your real cost per conversation on that list is higher than the dialer math suggests, and you've missed half the sellers.
Texting: the legal risk
Under the federal Telephone Consumer Protection Act, marketing texts to cell phones sent with an autodialer generally require the owner's prior express written consent, and courts have awarded $500 to $1,500 per message for violations. Florida, Oklahoma and other states have their own stricter laws. Cold text blasting to skip-traced numbers is the riskiest of the three channels. The 2026 reality on text blasting.
Use them together
The investors who do best usually run mail and calls on the same list: mail reaches everyone and builds familiarity; calls reach the owners with good numbers faster. Give each channel its own tracking and measure cost per deal, not just cost per conversation. Work out your cost per deal.
The list matters more than the channel
Any channel pointed at owners who aren't selling loses. Owners with a recent filing, like an expired listing or a foreclosure, sold off-market at 12 to 13 of every 100 within a year in the county records; free and clear owners at about 1.5. Pick the list, then the channel.
Questions investors ask
Is cold calling cheaper than direct mail?
Per attempt, usually yes. Per conversation, it depends on how many numbers you find, how many answer, and what your callers cost. Run both through the same cost-per-conversation math.
Is texting property owners legal?
Marketing texts to cell phones sent with an autodialer generally need the owner's prior written consent under the federal TCPA, and several states have stricter rules. Cold texting is a real legal risk.
Which channel reaches the most owners?
Mail: almost every owner has a mailing address in the county records. Phone numbers depend on skip tracing, and many don't connect or are on do-not-call lists.
Should I use mail and cold calling together?
Often, yes. Mail reaches everyone and warms them up; calls reach the subset with good numbers faster. Tracking each tells you which produces sellers.