LetterStream

1. 1

   You create a free account. No subscription, no minimum, no sales call. You are billed per job rather than per month, so an account that sits idle for a quarter costs nothing.

2. 2

   You upload documents and a recipient list, or push them through the mailing API. LetterStream accepts letters, flats, postcards, statements, invoices, payment coupon books, and ballot proxy mailings, so the format list is much wider than the marketing-oriented platforms.

3. 3

   You choose a mail class and options. First-Class for ordinary letters, Certified First-Class when you need proof, FedEx 2Day when you need speed and a signature, plus per-piece options such as return envelopes, extra pages, colour printing, and coloured stock, each priced separately and visibly.

4. 4

   Optionally, you run CASS and NCOA cleanup on the list. CASS standardizes and validates against USPS formats; NCOA updates recipients who have moved. On any list older than a year this is the step that decides how much of the spend reaches a person.

5. 5

   LetterStream prints, folds, inserts, stamps, and mails. The guarantee is a two business day mailout, with 95 percent going next business day and about half the same day, and a rush path before 3pm Arizona time for same-day dispatch. Certified pieces come back with tracking and, if selected, an Electronic Return Receipt as the delivery evidence.

Pure pay-per-piece with a free account, no monthly fee, and no minimum quantity. Base rates include printing, envelope insertion, and postage; every enhancement is priced separately per piece.

Value assessment: For marketing mail, LetterStream is poor value: $1.27 a letter and $1.30 a Pro postcard is roughly double what Poplar or Lob charge for a comparable piece, and there is no campaign layer to justify it. For legally significant mail it is excellent value and effectively uncontested in this category. Certified Mail with Electronic Return Receipt at $8.63 replaces a person, a queue, a green card, and a filing cabinet, and the free account with no minimum means a firm sending twelve notices a month pays nothing but the postage. The lesson most buyers should take is that this is a second vendor rather than a first one: run your campaign volume somewhere cheap and route the pieces that have to hold up in a dispute through here.

Setup time

Under thirty minutes for a first job. Create a free account, upload a document and an address list, choose a mail class and options, and submit. API integration takes a developer a day or so using the published sample code.

Learning curve

Low for the web workflow and moderate for the postal specifics. The parts worth understanding are what Certified Mail with and without a return receipt actually proves, how extra ounces are triggered by return envelopes and page counts, and when the 3pm Arizona cutoff applies to your deadline.

Onboarding

Entirely self-serve with a free account and no sales contact. Because there is no subscription, evaluation costs only the pieces you actually send, which makes a single test letter a realistic first step.

Migration notes

Coming from an in-house print and stuff operation, the work is producing a clean document template and a consistent address file rather than anything technical. Run CASS and NCOA cleanup on arrival, since a list that has been maintained by hand almost always carries more movers than its owner expects.

Platforms

Web applicationMailing APIDocument and list uploadRush processing path

API

A documented mailing engine with sample code, covering letters, flats, postcards, and return envelopes, intended for businesses to integrate into their own platforms. Functional rather than modern; expect no SDK ecosystem or sandbox environment.

Compliance

HIPAA certifiedUSPS CASS and NCOA processingBBB A plus accredited

Data residency

United States. Operations run from Scottsdale, Arizona through USPS and FedEx.

SSO

Not published.

Security notes

HIPAA certification with industry-standard encryption, which is what allows patient statements and health-related notices on the platform. Certified Mail records and Electronic Return Receipts provide the documentary trail that regulated and legal use cases depend on.

Channels

Email supportTelephone supportDirect account assistance

Documentation

Product and pricing documentation on the website, plus API sample code and integration documentation supplied to businesses building against the mailing engine.

Community

No public forum. Support is direct, which is workable given the company operates with roughly nineteen staff.

Founded

2003

Headquarters

Scottsdale, Arizona

Ownership

Privately held, led by president and chief executive David Patterson

Employees

Approximately 19

Funding

No outside funding disclosed. Third-party business databases put annual revenue at roughly $13.8 million.

LetterStream is the specialist you hold an account with rather than the platform you run your programme on. For marketing mail it is roughly double the price of the programmatic platforms with none of the campaign tooling, and nobody should route campaign volume through it. For anything that has to be provably served, it is close to uncontested in this category: Certified Mail with Electronic Return Receipt, FedEx signature confirmation, real CASS and NCOA cleanup, HIPAA certification, a published two business day guarantee, and a free account with no subscription and no minimum. Law firms, property managers, collections operations, medical practices, and membership organisations should open an account today, because it costs nothing until you use it. Everyone else should pair it with a cheap programmatic vendor and use each for the job it is actually good at.

Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.