2025 Deliverability Secrets 🔑

Cold email infrastructure that… just works.

➜ Never pay per mailbox again. Create unlimited mailboxes in minutes.

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The only mailboxThe only mailbox
infrastructureinfrastructure
built forbuilt for
high volume cold emailers whohigh volume cold emailers who
wan't deliverability, that just works.wan't deliverability, that just works.

Send thousands of emails per day from 1 domain

The days of buying 100+ domains with 2-3 mailboxes each, are over. With sending.ac you get the same deliverability from just 1 domain.

Create unlimited mailboxes per domain

Yup, you read that correctly. You can have unlimited mailboxes on 1 domain = cold email infrastructure just got like… really easy.

Setup is fully automated
(14 seconds = 1 mailbox)

Traumatised from spending 15+ hours on SPF, DKIM, DMARC? Or having to pay VA's to do it? Congrats. You never have to worry about that again.

Warmup for days not weeks = scale faster

Can you imagine? People really wait 2-3 weeks to warm up their mailboxes & pay for that unused time. When you use sending.ac you no longer have to do that.

Eventually, everyone burns mailboxes - so what then?

It boggles many minds - because some people really still do it the awkward way.

replacing mailboxes (old way)

Throw away 50 domains & 100 mailboxes (lost $1,000+)

Buy 50 domains, 100 mailboxes again (cost $1,000+)

15+ hours of setting up + wait 3 weeks for warmup

replacing mailboxes (new way)

Throw away only 1 domain ($15)

Replace mailboxes at no extra cost (DFY)

Replace as often as you want (e.g. preventively)

Solved in minutes, not weeks

1-click import into any sending tool

Literally compatible with any place where you can import mailboxes.

50% off for life! Or enjoy a free tier that won’t be available after the beta.

50,000 sending / mo

$99

/ mo

free

1 domain slot
Create 200 mailboxes
Replace mailboxes anytime, free
Backup infra for fast swap-outs
Auto-setup (47 sec = 1 mailbox)
Auto-rotate IP (when bounces)
Privately hosted (just you)

Apply today

50% off for life!

150,000 sending

/ mo

$299

/ mo

$149

/ mo

3 domain

slots

Create 600+ mailboxes

unlimited
Replace mailboxes anytime, free
Backup infra for fast swap-outs
Auto-setup (14 sec = 1 mailbox)
Auto-rotate IP (when bounces)
Privately hosted (just you)
Get approved the fastest

✓ includes 7 days free

👆

The alternative?

50,000 sending / mo is like having 200 mailboxes sending 12 emails / weekday

Gsuite is ~ $7,20 monthly x 200 mailboxes = $1440 / month
100 .com domains (2 mailboxes each) = $1200 setup

And it keeps breaking… forcing you to pay the same setup cost, again & again.

The 1 place with all the answers. You found it.

We have a whole bunch of answers to all kinda questions.

Unlimited mailboxes... but how many to create?

But why is 50,000 sending / mo free?

No seriously. Is this real? What's the catch?

Soo... does this replace instantly/smartlead?

How is the deliverability? Is it.. good?

What does "domain slot" mean?

What about hosting - private or shared?

Is "applying" some kinda marketing stunt?

How long does it take to get accepted?

Can I bribe my way to getting accepted?

Apply now while 200+ mailboxes are free and upgrading is 50% off for life!

Join 323+ Others

✓ TrustPeople verified

Creating 200 mailboxes cost $1000+ / mo

Apply and create 200+ mailboxes for free*

Apply

*Our free tier with 50k sending / month (200+ mailboxes) is only available during the beta