Dead Letter Office · Est. 2026 · Revenue Recovery Division
subject: your list isn't dead. it's undelivered.

We bring dead lists back to life.

Dead Letter is an email and SMS agency for e-commerce brands. We turn unengaged subscribers and forgotten customers into [$X]+ in recovered revenue. No fluff sends. No template junk. Just money that was already yours.

Brands we've delivered for
[Client Logo 1][Client Logo 2] [Client Logo 3][Client Logo 4] [Client Logo 5][Client Logo 6] [Client Logo 7][Client Logo 8] [Client Logo 1][Client Logo 2] [Client Logo 3][Client Logo 4] [Client Logo 5][Client Logo 6] [Client Logo 7][Client Logo 8]
// Case files

Marked undeliverable. Delivered anyway.

Three accounts other people gave up on. Here's what happened when we sorted the mailbag.

Case File No. 001
[+X%]
[Client Name]

[One line: what was broken, what we rebuilt, what moved. e.g. "Email was X% of revenue. We rebuilt the core flows. Now it's Y%."]

Read the full story
Case File No. 002
[+X%]
[Client Name]

[One line summary of the turnaround with the before and after metric.]

Read the full story
Case File No. 003
[$X]
[Client Name]

[One line summary of the turnaround with the before and after metric.]

Read the full story
// The problem

Most brands treat their list like a mailbag nobody sorts.

Subscribers go quiet. Flows go stale. Campaigns turn into "10% off" on repeat until people stop opening out of self-defense.

Meanwhile, paid acquisition gets more expensive every quarter, and you keep buying strangers while ignoring the people who already raised their hand.

Your list is the only channel you own outright. And right now it's sitting there, full of money nobody claimed.

Unclaimed revenue is still revenue.
We go get it.

Book a Call →
// Services

What we handle. All of it.

Strategy, copy, design, and implementation. In-house, end to end. Nothing outsourced, nothing phoned in.

Lifecycle Flows

Welcome, abandonment, post-purchase, winback. Built to sell, not just send.

Campaigns

A full monthly calendar of sends people actually open. Planned, written, designed, shipped.

List Revival

Re-engagement and sunset programs that wake the dead and respectfully bury the rest.

Design & Copy

Every email designed and written in-house, in your brand's voice. No templates, no ghostwriting farms.

Deliverability

We keep you out of spam and in the inbox where you belong. Dead letters are our business, not our output.

SMS

The same strategy, shorter and faster. Compliant, consented, and profitable.

// Why us

Why brands post their list to us

1

Email and SMS only

We do one thing, so we're dangerous at it. No "full-funnel" hand-waving, no juniors learning on your account.

2

Speed

First deliverables are live within [X days/weeks] of kickoff. Your list starts working while other agencies are still onboarding.

3

Full transparency

Weekly reporting and direct Slack access. You always know what shipped, what it made, and what's next.

4

No lock-in

Month to month. We keep clients with results, not contracts.

Book a Call →
// Reviews

Signed, sealed, on the record.

"[Testimonial quote 1. Two to three sentences, in the client's own words, about results and working with Dead Letter.]"

[photo]
[Name]
[Role, Company]

"[Testimonial quote 2.]"

[photo]
[Name]
[Role, Company]

"[Testimonial quote 3.]"

[photo]
[Name]
[Role, Company]
// FAQ

Questions, answered

How are you different from other email agencies?
We only do email and SMS, and everything is handled in-house: strategy, copy, design, and implementation. Most agencies bolt email onto ten other services. We built the whole shop around one channel.
What exactly is included?
Full lifecycle flow buildouts, a monthly campaign calendar, list revival and sunset programs, deliverability management, and weekly reporting. Copy and design included, across both email and SMS.
How many campaigns per month?
[X] campaigns per month as the baseline, scaled up or down around your promo calendar, launches, and seasonality. Frequency serves the strategy, not the other way around.
What does it cost?
Flat monthly retainer starting at [$X]/month, scaled to your send volume and scope. Month to month, no long-term contracts.
How fast will we see results?
First sends are live within [X] of kickoff, with the foundational flows in place by [X]. Meaningful revenue movement typically shows up within [X], though results vary by list and brand.
What platforms do you work with?
Klaviyo first. [Add other platforms if applicable.] If you're somewhere else, book a call and we'll tell you honestly whether we're the right fit or whether a migration makes sense.
Return to sender? Not anymore.

Your list has unfinished business.

One call. We'll look at your account and tell you exactly where the dead revenue is. If we can't find any, we'll tell you that too.

Book a Call →