Why paper works

Your buyer deletes a hundred emails before lunch. A letter sits on the desk all week.

Every vendor is running sequences into your target accounts’ inboxes, and the inbox absorbs them without noticing. A good piece of mail gets opened, read, and left on the desk, which is exactly where your rep’s call finds it. Physical isn’t nostalgic. It’s the one channel your competitors aren’t in.

77%

of mail gets read or looked at

120+ a day

emails landing in that same buyer’s inbox, the pitches among them mostly deleted unread

Industry figures: JICMAIL Q4 2024 · USPS Household Diary Study · email volume research. Averages, not promises.

The platform

The channel,
end to end.

Sending mail is the easy part. Sincerely runs the rest: the writing, the orchestration, the operations, and the number at the end.

01 · Writing

Personalized writing at scale

You make the template. AI personalizes every outgoing piece from the account’s signals — the round they raised, the roles they opened, the product they shipped — and every fact carries its source.

Maya is a sample. Hover the highlights to see where each claim comes from.

First classPOSTED MAY 21

Dear Maya,

Congratulations on the . I read the announcement, and then the . New reps mean new pipeline targets, and most teams find out mid ramp that the outbound stack was sized for the last stage.

If that’s already on your mind, I’d like twenty minutes before . The QR below books it, and either way, no sequence follows this letter.

Sincerely,

Dana Reyes · Account Executive

02 · Formats

Two formats live, one workflow

Postcards and letters at published per-piece prices. Handwritten notes and gifts are built and not yet mailable. You contract with no print vendor.

every provider → one interface → one invoice

03 · Orchestration

Multi-step campaigns, fired by signals

Sequences trigger on what your CRM already knows: a funding round, a renewal window, a deal gone quiet. They run to a cadence, and eight campaign types cover the funnel.

a sequence for every tier

04 · Measurement

Measured against a holdout

QR scans catch direct response, matchback ties meetings to mailed accounts, and account-level holdouts measure lift. Evidence and inference, labeled.

+27% lift

mailed8.9%

holdout7.0%

opportunity rate, mailed vs holdout

05 · Integrations

Plugs into your revenue stack

Salesforce, HubSpot, a CSV, or a description of your ideal customer in. Rep follow-up tasks come out, timed to delivery confirmation, not to a send button.

sync in

Salesforce HubSpotCSV

rep task · outDelivered

Call Maya @ Coastline · 15 min

trigger: delivery confirmed · 09:14

06 · Operations

Operations handled end to end

Address resolution

scored

A waterfall across data sources and your CRM. Every address carries a confidence score and provenance.

Mailability

pre-flight

Verification before postage. Low confidence goes to a review queue, never to the mailbox.

Approvals

human

Nothing prints without a human sign-off, and every edit is versioned.

Budgets

enforced

Spend limits set once, enforced on every campaign before a piece is queued.

Fulfillment

one invoice

Print, postage, and providers managed behind one invoice, with the markup disclosed.

Tracking

per-piece

Every piece tracked to the mailbox. Delivery timing drives the follow-up.

Inside the product

This is the product.
Click around.

The interface, live, with sample data. Every tab in the sidebar works: the approval queue, the campaigns, the pieces in motion, and the report at the end.

this demo is live · click the sidebartap a page in the top bar ↓

app.trysincerely.com/app/messagesInteractive demo · sample data

Air cover · Q3 fintech outbound

Writing

Approve all clean drafts

8 waiting on review · 1 drafting · 8 approved or sent

Contact	Format	Score	Facts	Status	Waiting
Maya AdeyemiCEO · Halcyon Robotics	letter	92	3 sourced	Needs review	2h ago
Wes KimDirector of Demand Gen · Palisade Cloud	postcard 4×6	90	2 sourced	Needs review	2h ago
Vera DumontHead of Growth · Granite Team	postcard 4×6	78	2 sourced	Needs review	5h ago
Umar VanceCMO · Longitude Retail	postcard 6×9	34	1 weak fact	Needs review	1d ago
Sam SatoDemand Gen Manager · Windrose Capital	postcard 4×6	28	1 weak fact	Needs review	1d ago

Weak facts stay flagged even after approval. Nothing prints until someone here approves the words.

Start free

Write to us

Say it on paper. Prove it in pipeline.

Launch a pilot to your top accounts: research-backed pieces your reps approve, follow-up timed to delivery, and an account-level holdout that reports what the channel actually created.

Start free Schedule a call

Setup takes an afternoon. Delivery takes days, because paper travels. The report takes a sales cycle, because pipeline does too.

Write to us: adam@trysincerely.com