無料で営業リストを作る方法はありますか？

国税庁の法人番号公表サイトや電話帳サイトを使えば、法人名と住所は無料で集められます。ただしFAX番号・業種の実態・規模の情報は自力で補う必要があり、100件で2〜3時間かかるのが一般的です。

購入した営業リストの精度が悪かった場合、返金されますか？

多くの場合、購入後の返金は受けられません。発注前にサンプルを取り寄せ、不達分の差し替えや返金の有無を取り決めておくのが安全です。

個人のリストも購入できますか？

野島技研マーケティングは法人情報のみを扱い、個人名・個人住所・個人電話といった個人情報は取り扱いません。企業リストは法人名・所在地・代表電話・代表FAX・業種区分などで構成されます。

Build or buy a sales list? | Why ¥0.1-per-entry lists don't work

Published: 2026-08-14 / Author: Akio Nojima (owner of Nojima Giken / 20+ years in fax DM and business lists)

A sales list can be bought, built yourself, or researched and built for you — three choices. Prices per entry range from ¥0.1 to over ¥20, a 200-fold spread, and choosing on unit price alone almost always fails. In this article, drawing on 20 years of handling business lists, I sort out from a practical standpoint how the contents differ by price range and whether building your own is really cheaper.

Sales list prices range from ¥0.1 to ¥20 per entry

The unit price of a business list is not set by vendor; the price range depends on what is actually being sold. Even the same "1,000-entry list" can be a completely different thing.

Price range	Typical contents	Best suited for
¥0.1–1 per entry	Bulk sales from an existing database, sold in lots of tens of thousands. Mainly company name, address and main phone number	High-volume telemarketing
¥3–5 per entry	General lists already filtered by industry and region. Update frequency depends on the provider	Ordinary DM and fax DM
¥8–15 per entry	Frequently updated, with fields such as capital, number of employees and annual sales	Targeted proposal sales
¥20+ per entry	Researched lists built for each project. Small lots possible	New-customer development where accuracy matters

"Cheaper is better" may look true, but with fax DM and postal DM, unless you think in cost per delivered piece rather than unit price, it ends up costing more. The next section explains why.

What is going on inside "cheap lists"

The lower the unit price, the more likely the following get mixed in.

Closed and relocated businesses remain — the fate of a database that isn't updated
Blank fax numbers — even with a company name and address, without a fax number the entry is useless for fax DM
Duplicate branches and sales offices — the same company receives several copies, which makes a bad impression
Industry classification doesn't match reality — the registered industry and the business actually carried out don't always match
It doesn't reach the decision-maker — only the main contact, never passed on to the relevant department

If only 600 of 1,000 entries are actually usable, even a ¥1 list really costs about ¥1.7 per entry. On top of that, with fax DM the sending fees for undelivered faxes are wasted too. With cheap lists you tend to "buy cheap and pay again in sending fees."

Is building your own really cheaper? (Converting to an hourly rate)

It is tempting to think "if I collect it myself with free tools, it's free," but converting time into unit cost changes the picture.

Job	Approx. per entry	Per 100 entries
Search for candidates	20–40 sec	About 1 hour
Copy addresses and fax numbers from websites	30–60 sec	About 1–1.7 hours
Check for duplicates and closures	10–20 sec	About 0.5 hours
Total (100 entries)		About 2–3 hours

At ¥2,000 an hour, 100 entries cost ¥4,000–6,000, or ¥40–60 per entry. Using the National Tax Agency's Corporate Number Publication Site or phone directory sites, you can collect company names and addresses for free, but collecting fax numbers and checking what a business really does are hard to automate, and that is where all the time goes..

How to choose: decide by volume and accuracy

What you want to do	Best option
Reach tens of thousands, no matter what	Cheap ready-made list (¥0.1–1 range)
Narrow thousands down by industry and region	General list (¥3–5 range)
Reach a few hundred with accuracy	Researched list (built by research)
100 or fewer / special conditions	Researched list, or build your own

The rule of thumb is simple: the bigger the gross profit from one order, the more it pays to spend on the list. For a product with ¥50,000 gross profit, even if the list costs ¥10 more per entry, the difference over 300 entries is only ¥3,000.

A third option: researched lists

Nojima Giken Marketing does not reuse ready-made lists; instead we research and build a target list for each project. We narrow down from every industry in the Japan Standard Industrial Classification by prefecture, size, annual sales and more, from ¥20 per entry. For fax DM, we deliver only entries that have a fax number.We handle corporate information only — never personal information such as individuals' names, home addresses or personal phone numbers. Minimum lot sizes are negotiable.

FAQ

Q. Is there a way to build a sales list for free?A. With the National Tax Agency's Corporate Number Publication Site or phone directory sites, you can collect company names and addresses for free. However, you have to fill in fax numbers, actual business type and size yourself, which typically takes 2–3 hours per 100 entries.

Q. If a purchased list turns out to be inaccurate, can I get a refund?A. In most cases, refunds are not available after purchase. It is safest to request a sample before ordering and agree in advance on replacements or refunds for undeliverable entries.

Q. Can I also buy lists of individuals?A. We handle corporate information only and do not handle personal information such as individuals' names, home addresses or personal phone numbers. The business lists we provide consist only of corporate information such as company name, location, main phone, main fax and industry category.