Direct Mail Campaign: A 200-Letter Plan, Step by Step

A direct mail campaign is a planned mailing to a chosen list, with one goal, a follow-up and a way to count results. A first B2B campaign can be 200 letters to named business owners, run over about seven weeks. The work comes in five steps, which are the list, the letter, sending, follow-up and measuring.

This plan is written for an agency or freelancer that sells websites, SEO or marketing to local businesses. The times in it are our own estimates.

What is a direct mail campaign?

A direct mail campaign is one mailing, or a short series of mailings, sent to a defined list for one purpose and measured as a unit. Four things separate it from posting a few letters when you have time.

1. A fixed list. You know every name before the first letter goes.
2. One goal. For an agency, a booked call.
3. Dates. A posting day and a follow-up day for every batch.
4. A count at the end. What went out, what came back and what it cost.

Most guides to direct mail campaigns describe thousands of postcards sent to households. A B2B direct mail campaign is smaller and takes longer to prepare, because each piece is written to one owner about one business. Our broader guide to direct mail marketing covers the formats and the cases where mail is the wrong tool.

Why start with about 200 letters?

Start with 200 because it is a number you can check by hand, afford in postage and repeat. Three things follow from the size.

You can confirm every name and address. You can write a first line that fits each business. And the postage is small. A 1-ounce stamped letter costs $0.82 under the US Postal Service price list of October 4, 2026, so 200 letters cost $164 to post (USPS Notice 123).

Bulk postage begins at this size too. Each USPS Marketing Mail mailing needs at least 200 pieces or 50 pounds of mail (USPS Business Mail 101). For a first campaign, stamps are simpler, and a stamped envelope looks like correspondence.

One limit comes with the size. 200 letters are too few to prove a response rate. They are enough to learn whether a trade and an area deserve a second round.

What does the plan look like week by week?

The plan runs seven weeks. The list and the letter take the first two, posting takes one, and follow-up fills the rest. The follow-up takes 19 working days from the day each letter arrives, which is just under four weeks.

Week 1 is the heavy one. Step 1 shows where its 27 hours come from and three ways to cut them.

Step 1. How do you build the list?

Pick one trade in one area and collect 200 businesses, each with the owner's name, the street address and one finding from their website. The list is most of the work, and it decides most of the result.

Choose businesses by their website. In our test of 3,570 cold emails, businesses with the weakest 20% of websites replied positively about 3.2 times as often as a random sample of the rest. The test ran on email, with Dutch companies, so it proves nothing about letters. It is still the best reason we have to pick by website, and the full write-up has the detail.

Budget the hours honestly. The same write-up estimates that reviewing 1,382 websites by hand, for an earlier campaign, would have taken about 8 minutes a site. At that pace, 200 sites take 1,600 minutes, which is about 27 hours. You will also look at more than 200 sites to find 200 worth a letter.

There are three ways to handle that.

1. Spread it out. Build the list over the month before week 1.
2. Run a pilot. Start with 50 letters and keep the same plan.
3. Use a tool that scores for you. Leadodo is one. Twip scores every website in a search out of 100, and sites below 40 form the shortlist.

Step 2. What goes in the letter?

One page, with a first line that could only be written to that business. The finding from your list becomes that line. The rest of the letter is the same for all 200.

The structure is explained in our guide on how to write a sales letter. For wording, start from the sample sales letters and change the first line.

Run three checks before you print 200.

• Print one letter and read it aloud.
• Post one to yourself, so you see what the owner will see.
• Compare 10 random letters with their rows in the list. A merge that puts one roofer's finding under another roofer's name ends the conversation before it starts.

Decide now how you will spot a reply to the letter. A phone extension or a short web address used only in this letter both work. So does asking.

Step 3. How do you send 200 letters?

Send them in four batches of 50, posted Monday to Thursday. Batches spread the follow-up, so 200 first emails do not fall due on one morning.

You have three routes.

1. By hand. Print, sign, fold and stamp. At about 2 minutes a letter, by our estimate, 200 letters take about 7 hours.
2. A print-and-mail service. You upload the list and the letter, and the service prints and posts. You still supply each first line.
3. A tool that runs the sequence. In Leadodo, your Outbound Machine posts the letter and then sends the emails and LinkedIn steps. A posted letter in the US costs about 86 cents, for one page in black and white, sent First Class. That covers printing, postage and the envelope.

Whichever route you take, check four things per batch. The owner's name and address match the business's own website. The finding is still true today. Your return address is on the envelope. The first follow-up email is scheduled.

Step 4. How do you follow up?

Follow up by email 3 working days after the letter arrives, then twice more, then on LinkedIn. The day numbers below are the ones your Outbound Machine uses, and they work by hand too. They count working days, and day 1 is the day the letter arrives. The last column is our advice on what to write at each step.

Two rules hold throughout. The sequence stops for a business the moment it replies. A no ends it on every channel.

Email has its own legal rules. US law requires a clear way to opt out of commercial email, and you must honor a request within 10 business days (FTC). This is not legal advice.

Track each batch by its own day 1. Our pillar on direct mail for agencies explains why the letter goes first.

Step 5. How do you measure a direct mail campaign?

Count seven things, then work out what one meeting cost. Do the count when the last batch has passed day 19, and once more a month later for slow replies.

Cost per meeting is the total cost divided by the number of meetings. Keep that figure next to the trade, the area and the kind of finding you used.

Read small numbers with care. Our email test compared a generic email with one that named the problem on the website. The result, 1.60% against 2.35% positive replies, was not statistically significant (p = 0.238), and that test had 3,570 emails. A round of 200 letters cannot settle a question about wording. It can tell you whether this trade and this area deserve a second round.

Then change one thing for round two. The trade, the area or the kind of finding.

What does a first campaign cost?

Postage for 200 stamped letters is $164. Your hours are the larger cost. By hand, the estimates in the weekly plan add up to about 51 hours.

The two prices cover different things. The $0.82 is postage alone, so paper, envelopes and printing come on top when you send by hand. The 86 cents covers printing, postage and the envelope, for one page in black and white, sent First Class. Our post on direct mail cost prices each part per piece.

Questions

How many letters should a first direct mail campaign send?

About 200. That is enough to fill four batches and learn which trade responds, and few enough to check every name. If you build the list by hand, a pilot of 50 is a fair start.

How long does a direct mail campaign take?

About seven weeks for a first one, by our estimate. Two weeks go to the list and the letter, one to posting, and four to follow-up and replies.

What is a good response rate for a direct mail campaign?

Prospect lists average a 4% to 5% response, depending on format and targeting, according to PI World, citing the 2024 ANA Response Rate Report. PI World is a trade magazine, and the report itself is for ANA members only, so we could not read it. The figure is no result of ours. Your own second campaign, compared with your first, is the benchmark that counts.

Should I use stamps or bulk mail for 200 letters?

Stamps. USPS Marketing Mail needs at least 200 pieces or 50 pounds in each mailing, so a first campaign sits right at the minimum. A stamped envelope also looks like a letter from a person.

When should I email after the letter?

Three working days after the letter arrives. Day 1 is the day of arrival, so that is day 4 of the sequence. When you post by hand, count from the day the letter should arrive. The owner still remembers the letter, and the two messages do not land together.

Should I send a second letter to people who did not reply?

We have no data on second letters. If you send one, wait until day 19 has passed and bring a new finding. Never repeat the first letter.

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Next step. Your Outbound Machine opens with a posted letter that arrives on day 1 and runs the five steps after it, and it stops for every business that replies. See the sequence.