Business email

All your company's email. One flat price.

Name: LetterDuck
Brand: LetterDuck
Price: 50 USD

Everything your company does with email in one system, priced for the company instead of per person.

Unlimited addresses and subscribers. Your bill does not move when you hire.

Inboxyourdomain.com

amelia@Re: the Q3 partnership, we are in2m

sales@New reply from the Friday campaign18m

press@Interview request, Thursday work?1h

letters@Issue no. 12 delivered to 4,812 readers1d

Sending asamelia@yourdomain.com ▾Send

Every address, one systemWhole company, one billNewsletters + contacts includedDeliverability handled

The problem

Your company should not need four products to run email.

Now

Most companies buy inboxes, newsletter tools and contact lists as separate products, pay for each one by the head, and still watch the mail land in spam.

With LetterDuck

LetterDuck is all of it in one product: unlimited inboxes at your domain, the newsletter, your contacts, and deliverability handled. One bill for the whole company.

How it works

Three steps. Then it is just email.

Connect your domain

Paste the DNS records we generate. SPF, DKIM and DMARC are written and watched for you.

Give everyone an address

A real mailbox for each person, plus shared ones like sales@ and support@. Always unlimited.

Send from one place

Replies, campaigns and the newsletter. Warm-up, suppression and one-click unsubscribe ride along.

The demo

Click around. This is the product.

The whole workspace, with a guided tour leading you through it. Skip it and wander whenever you like.The whole workspace, one screen at a time. Swipe through it.

The inbox: one list for the whole domain, unread dots, and a per-address tag like sales@ on every message — 01InboxMail to every address you own lands in one place.

Automations: auto-replies, scheduled sending and follow-ups, one feature per tab — 03AutomationsAuto-replies, scheduled sending, follow-ups that stop when someone replies.

Deliverability: SPF, DKIM and DMARC records aligned, a warm-up day counter and a 14-day chart — 04DeliverabilityRecords checked every two hours, a warm-up that paces you.

Addresses: every address is a real inbox with history, and a new one is created from one field — 05AddressesA new address is a real inbox, live in seconds.

Step 1 of 10

yourdomain.com 5 addresses 99.2% inboxed 0.02% complaints SPF DKIM DMARC aligned

Inbox zero. Every thread is answered or archived.

Subject Preview text

Body

Template

Five today. See the full gallery. New templates land every month, and they work for regular emails too.

Audience

3 people who left are screened out of this send, at no charge.

Live preview

The Sunday Dispatch

Read issue no. 13

After the subject: Inside: the fall line, a warm bindery, and the case for paper proofs.

From: letters@yourdomain.comOne-click unsubscribe attached

Past issues

Best week: 109 new readers the day issue no. 10 went out.

Pick who gets it, write the answer once, switch it on. It replies once per sender, never twice.

Disclaimer

This demo exists to showcase the features of LetterDuck. The real dashboard is in the works, and everything you just tried will be far better there.These screens are a preview, not how the finished product will look. LetterDuck is a desktop product, and the working demo is on the desktop version of this page.

Be the first to see it

The standard

What handled actually means.

What you saw in the demo, kept true underneath.

Your mail lands.

SPF, DKIM and DMARC, done for you
Automatic warm-up
One-click unsubscribe, built in
Spam trouble caught before it costs you
Always current with Gmail and Yahoo's latest sender rules

Everything included.

Unlimited email addresses
Full inboxes for the whole team
Newsletter with templates, new ones monthly
Auto-replies, scheduled sends, follow-ups
One theme across all your mail

Built for a team.

One admin runs the whole domain
Everyone gets their own inbox
Shared addresses like sales@ and hello@
A new address is live in seconds

How we make sure you land in the inbox See the free templates

Pricing

One price. Everyone included.

$50

per domain

Everything above, for the whole company.

Unlimited addresses, unlimited contacts, unlimited subscribers. No seats, no tiers, no surprises.

The eleventh hire is free. So is the fiftieth.

Compare

Next to the stack you pay for now.

For a ten person team	Google Workspace	LetterDuck
The bill	$14 per person: $140 a month, rising with every hire	One flat price
New hire	Another seat to pay for	Free, ready in seconds
Newsletter and contacts	Not included	Built in
Docs and video calls	Included	We only do email
Warm-up and spam watch	Yours to handle	Handled

For a ten person team	Microsoft 365	LetterDuck
The bill	$14 per person: $140 a month for ten	One flat price
New hire	Another seat to pay for	Free, ready in seconds
Newsletter and contacts	Not included	Built in
Office apps	Included	We only do email
Warm-up and spam watch	Yours to handle	Handled

For a 5,000 contact list	Mailchimp	LetterDuck
The bill	Standard plan: $100 a month at 5,000 contacts	Flat, unlimited contacts
Unsubscribed contacts	Still count toward your bill	Suppressed free, forever
Team inboxes and replies	Not an inbox	Every address, threaded
One-click unsubscribe	Included	Included
Sending domain	Often shared	Yours, warmed and authenticated

For a 5,000 reader newsletter	Kit	LetterDuck
The bill	Creator plan: $89 a month at 5,000 subscribers	Flat, unlimited
List growth	Every tier costs more	Price never moves
Team email on your domain	Not included	Unlimited addresses
Landing pages	Included	We only do email
Contacts with notes and folders	Built for broadcasts	A real contact book

For a 5,000 reader newsletter	beehiiv	LetterDuck
The bill	Scale plan: about $89 a month at 5,000 subscribers	Flat, unlimited
Team inboxes and replies	Send-only	Full inbox, reply as any address
Contacts with notes	Subscribers only	Notes, folders, forms
Referral program	Included	We only do email
Your domain's warm-up and spam watch	Not its job	Around the clock

LetterDuck is one system for everything your company does with email.

Questions, answered plainly.

What does the plan include?

One domain: unlimited addresses, contacts, newsletters, and deliverability managed for you. One flat price, no tiers, no per-seat charges.

We already pay for a per-seat suite. Why move?

Because the suite covers only the inboxes. Newsletters, lists, campaigns and deliverability still need their own tools, and every hire adds a seat to each of them. LetterDuck is that whole pile in one place, on your domain, at one flat price.

How hard is setup?

Paste a few DNS records, watch the live check turn green. We generate them for you. Minutes of work, once.

Do I need to understand SPF, DKIM or DMARC?

No. They are published, aligned and monitored for you. If you do understand them, everything is visible in Settings.

How do we move without breaking anything?

You point your domain's MX records at us when you are ready, and you can keep your current provider running while you check. Seats open in waves precisely so each move gets done with you rather than left to a migration wizard.

Can my whole team use it?

Yes. Every address is its own account. One per person, shared ones like sales@, and the bill never moves.

When does it launch?

Seats open in waves. You get exactly one email when yours is ready, and nothing else before that.

Reserve your domain's place.

Seats open in waves. One email when yours is ready, and not a word before that.