Send your clients and prospects personal letters, printed on real paper and posted straight to their desk. No spam folder, no AI slop.
November 4, 2026
Dana WhitfieldRidgeway Plumbing Co.
Dear Dana,
Congratulations on the new Aurora shop. A second location tends to strain the dispatch board before anything else, and I saw you're hiring two more dispatchers this fall.
Fieldline lets one person schedule techs across locations from a single screen, so a new shop doesn't automatically mean a new dispatcher.
Would a short look next week be useful?
Kind regards,
Maya LindqvistFounder, FieldlineYou could do this yourself — but we’re the experts.
From your website and a few details about your business, we set up a profile with your target audience, buyer segments and brand voice.
Our AI finds the clients and prospects most likely to buy from you, and verifies every address.
Our team writes a personal card for each recipient, in your brand’s voice.
Before anything is mailed, we double-check that every card is relevant to you and to the person receiving it.
After your cards are delivered, we keep tracking the responses they bring in.
More customers on autopilot for you
Stop your work to build prospect lists and hunt down postal addresses.
Look into each prospect and decide whether they’re worth a letter.
Write, address and stamp every card yourself.
Deal with printers, envelopes, stamps and the post office.
Tracking results from mail is tricky, so you’ll probably send it and hope for the best.
Lots of work — with unknown results
Give us your website and a few details, and we learn about your company and products. Then we find your best clients and prospects, and we send each of them a personal letter.
We read your website to understand your business, products, USP and brand voice.
We research the companies and people most likely to buy from you, and verify every address.
We write a personal letter to each recipient, in your brand’s voice, then print and post it.
You can choose if you want cards to go out automatically or if you want to approve each batch before it’s mailed. We focus on high quality prospects and high quality cards.
Every letter is written for one person, from what’s happening at their company right now.
Carla Mendes
Granite Ridge Builders
Boise, ID 83702
Dear Carla,
The Riverside clinic contract is a big win. Congratulations.
Four open project manager roles tell me the crews are growing fast, and the receipts with them.
Ledgerline codes every crew's expenses from a phone photo, so month end doesn't grow with the headcount.
Would a short look next week be useful?
Kind regards,
Maya Lindqvist
Founder, Ledgerline
Example letter. The people and companies are invented.
76 of 100 pieces of mail
get read, looked at or glanced at.
JICMAIL, Q1 2026. 10,109 items in UK homes, all mail types
35 of 100 cold emails
get opened, and Apple Mail can count an open nobody made.
Belkins, 5.5M cold emails, 2024. 46% with a personalized subject line
Your buyers get more email every year and less mail. A cold email has to fight through the crowd. A letter lands with less competing for their attention.
| Year | Emails per day | Pieces of US mail |
|---|---|---|
| 2018 | 281.1 | 146.402 |
| 2019 | 293.6 | 142.562 |
| 2020 | 306.4 | 129.171 |
| 2021 | 319.6 | 128.842 |
| 2022 | 333.2 | 127.444 |
| 2023 | 347.3 | 116.174 |
| 2024 | 361.6 | 112.456 |
| 2025 | 376.4 | 108.695 |
Radicati Group, email traffic · USPS, pieces of mail handled. Email is a worldwide estimate. Mail is US only and includes packages.
Cold email has to get past spam filters first, and only 1 in 222 gets a reply. A letter goes straight to their desk.
Direct mail gets 141 seconds of attention on average and stays around for 7.8 days. It keeps getting another chance to be read.
JICMAIL, Q1 2026. UK households
In a brain-imaging study of 270 people, physical media took 21% less effort to understand and brought 70% higher brand recall than digital.
Canada Post and True Impact, 2015. Commissioned by Canada Post
What most outreach says
Hi there, I wanted to reach out because we help service businesses schedule better. Do you have 15 minutes this week?
What your letter says
Congratulations on the new Aurora shop. A second location tends to strain the dispatch board, and I saw you're hiring two more dispatchers this fall.
Adding just a name to an email's subject line brought 31% more sales leads in a randomized test. We research every person and write about what's actually happening at their company.
Win one customer from every 1,342 letters and you've broken even, at $1.49 a letter. That's the arithmetic, not a forecast.
Pay per letter. Research, printing and postage are included.
$1.49 a letter, with research, printing and postage.
Stop anytime. Nothing mails until you say go.
Find answers to common questions about thready.
thready is a direct mail platform that helps you reach clients and prospects with real, physical mail. We find the people most likely to buy from you, write a personal letter for each one, and print and post it to their desk.
Printed letters on real paper. Each one is written for its recipient, about their business.
$1.49 a letter on a monthly plan, or $1.99 a letter one time. That covers research, printing and postage. You can stop a monthly plan anytime.
We use a combination of AI and human curation. We research your business, propose buyer segments, and find the real companies and people in them. Every address is verified before a stamp goes on it.
Yes. We show you the first companies we found and the first letter we wrote before you pay, and nothing mails until you say go.
Yes. Import your client list and we’ll write and send them personal letters too, whether it’s a thank-you, a check-in or an offer.
You can read, edit or remove any upcoming letter before its mailing day. You don’t have to: letters that fail our checks are held back and never charged.
Join thready to send clients and prospects personalized mail and stay ahead of the competition.
