Six Companies Run Your Messages and Your Paperwork

You woke up, opened your phone, and a six-digit code was waiting so you could log in to your bank. A few minutes later a receipt landed in your inbox. By lunch a contract arrived as a PDF, already filled in with your name, your address and the right numbers, ready to sign. None of it was written by a person. All of it was software. And almost all of that software comes from a handful of companies you have never heard of.

There is a layer of the internet that no one puts on a billboard. It does not have a consumer app. It does not trend. Its whole job is to make a message appear at the right moment and a document generate itself without anyone typing. When it works, you feel nothing. When it breaks, you get the password reset that never arrives, or the invoice with someone else's name on it.

Six companies do a surprising amount of this work: Braze, Iterable, Twilio, Plumsail, Experlogix and Newgen. They do not compete in one tidy market. They split neatly into two jobs, and the split tells you almost everything about how modern companies talk to you.

The two halvesSay the thing, then put it in writing

Every business does two things with a customer. It says something - welcome, your code is 4821, your order shipped, you left something in your cart. And it puts something in writing - a quote, a policy, a contract, an onboarding form. One half is conversation. The other half is paperwork. The six companies line up cleanly on either side.

Read that table again and you can predict your own week. The reminder text is the left column. The signed agreement is the right column. Most people assume it is all one system, run by whichever brand's logo is on the email. It is not. The brand is a customer of these companies, the same way it is a customer of its landlord.

The loud halfThe people who send you things

Start with the noisy side. Twilio is the strangest business of the six. Founded in 2008 by Jeff Lawson, Evan Cooke and John Wolthuis, it took something phone carriers treated as a throwaway - a text message, a phone call - and turned it into a few lines of code a developer could call. Charge by the message, charge by the minute, and let ten thousand apps build on top. That pitch now brings in revenue reported near $5.07 billion a year. When your ride-share driver calls you from a masked number, or your login code arrives by SMS, there is a good chance Twilio moved it.

If Twilio is the pipe, Braze is the brain that decides what flows through it. Founded in 2011 (as Appboy) by Bill Magnuson, Jon Hyman and Mark Ghermezian, Braze is where a marketing team builds the logic: if a shopper adds shoes to a cart and leaves, wait two hours, then send a push, then an email, then hold off if they buy. By 2024 it reported around $593 million in revenue and roughly 2,300 customers. You never see Braze. You see the perfectly timed nudge it fired.

Iterable, founded in 2013 by Andrew Boni and Justin Zhu, is the company most often lined up next to Braze in a buyer's spreadsheet. Same idea - orchestrate email, push, in-app and SMS from customer data - usually pitched as the flexible, more affordable challenger. The rivalry is real, and it is the reason your favorite app's messages feel a little sharper every year. Two companies pushing each other means the welcome flow you get in 2026 is better tuned than the one you got in 2019.

The quiet halfThe people who print the paperwork

Now the side nobody tweets about. Once a company has said the thing, it usually has to put it in writing, and that is a different craft entirely. Plumsail is the smallest and most focused of the group. It lives almost entirely inside Microsoft's world - SharePoint, Power Automate, Microsoft 365 - and generates Word, Excel and PDF files from templates, plus web forms that collect the data in the first place. Drop your details into a form, and Plumsail can turn them into a finished, formatted document and route it onward, connecting to thousands of other apps along the way.

Experlogix plays the same position at heavier weight. Its Document Automation product generates complex business documents and quotes and wires directly into the systems companies actually run on - Microsoft Dynamics 365, the Power Platform, Salesforce, SugarCRM, plus various ERP and content systems - through out-of-the-box connectors and REST APIs. The pre-filled quote that shows up with every line item correct, the insurance document that assembles itself from your policy data: that is this kind of engine at work.

Newgen is the outlier, and the oldest - founded in India in 1992, listed on the NSE since 2018. It is not a single feature but a whole low-code platform: content management, process automation and customer communications bundled into one system it calls NewgenONE. In 2025 it added a generative-AI layer named Marvin. Newgen serves 500-plus customers across 70-plus countries, and it earns roughly 71% of its revenue from banking, financial services and insurance. When your bank's loan application feels like it was built by careful, unglamorous people, it may well have been.

That 71% number is the whole thesis of the quiet half. Boring, regulated, document-heavy industries pay a lot for software that never breaks and is a nightmare to replace. A bank does not swap out the engine generating its loan documents on a whim. The messaging market is a knife fight for attention; the document market is a long, sticky lease.

Follow the journeyHow one signup touches all six

Picture opening an account with a new lender. Here is the relay, roughly in order, and which kind of company runs each leg.

The form that captures your details is the document half. The login code and the welcome email are the messaging half. The account agreement, generated with your data already inside it, is the document half again. And the delivery - to your inbox, your phone, a portal - is messaging once more. One smooth experience, stitched from at least four vendors, none of whom you will ever think about.

Reading the mapWhat you can actually do with this

This is not trivia. If you build, buy or run anything, the split is a useful lens. When you shop for customer software, ask which half of the problem you actually have. Do you need to reach people better, or to produce and route documents better? Teams routinely buy a shiny engagement platform when their real pain is that generating a compliant PDF takes three days. The two problems look similar from the outside and are solved by completely different tools.

If you invest or just want to read the market, notice where the durable businesses hide. The messaging half is glamorous and crowded; the document half is dull, embedded and quietly profitable. Newgen banking 71% of its revenue from financial institutions is not a footnote - it is the pattern. Software that lives inside a regulated workflow is protected by the sheer cost of ripping it out.

And if you just want to understand the companies you deal with, watch the seams. The message that arrives a beat too late, the document with a stray formatting bug, the form that forgets what you typed - each is a small window into which of these layers a company chose, and how well it wired them together. The six companies are invisible on purpose. Now you know where to look.

By the numbersRoughly how they stack up

Figures are approximate, drawn from public reports and mix revenue with reach — shown for scale, not as a like-for-like ranking. Plumsail and Experlogix are privately held and do not publish comparable numbers.