Sending infrastructure

Cold outreach that reaches the inbox.And protects your main domain.

We set up dedicated sending domains and mailboxes, authenticate them, warm them up and verify every address before sending. Bounces pause the mailbox, not your campaign.

In your call: an infrastructure check, a setup plan for your domains and a realistic timeline.

Mailbox fleet
Live
  • anna@get-company.comReady
    100%
  • jonas@company-team.comWarming up
    82%
  • lea@try-company.comWarming up
    54%
  • max@company-sales.comWarming up
    23%
Main domain protected

SPF · DKIM · DMARC

verified

Read our customer stories

The risk

One spam spike can hit your entire company.

Cold outreach from your main domain puts quotes, invoices and customer communication at risk. These are the four mistakes we see again and again.

01

Sending from the main domain

If a few recipients mark your mail as spam, your whole domain reputation suffers. Even day-to-day email ends up in the spam folder.

02

Missing authentication

Without clean SPF, DKIM and DMARC records, mail servers distrust the sender. Messages get filtered before anyone sees them.

03

A cold start at volume

A new mailbox that sends hundreds of emails at once stands out. Without a warmup phase it lacks credibility with the major providers.

04

Unverified addresses

Bounces from outdated or invented addresses drag down reputation. Without verification you only notice once the damage is done.

Isolation

Your main domain stays out of the line of fire.

Cold outreach runs on dedicated sending domains that fit your brand. Several domains spread the volume, and your main domain stays reserved for customers, team and invoices.

  • 1

    Dedicated domains that fit your brand

    We choose sending domains that look trustworthy to recipients and match your presence.

  • 2

    Volume is distributed

    Sending is spread across several domains and mailboxes instead of overloading a single one.

  • 3

    Risk stays contained

    If one sending domain suffers, your day-to-day business is untouched.

No cold outreachcompany.comCustomers, team, invoicesSENDING DOMAINSget-company.comcompany-team.comtry-company.comInboxRecipient

DNS check

get-company.com

  • MX

    Mail routing

    mx.…

    Checking Verified
  • SPF

    Sender allowed

    v=spf1 include:… ~all

    Checking Verified
  • DKIM

    Signature

    k=rsa; p=MIGf…

    Checking Verified
  • DMARC

    Policy

    v=DMARC1; p=none; …

    Checking Verified
All records verified

Technical setup, done

DNS, SPF, DKIM, DMARC. Without you touching a line.

We add the records and check that they propagate worldwide. A mailbox only moves to the next phase once everything is verified.

  • Domain setup and DNS zones
  • Authentication with SPF, DKIM and DMARC
  • DNS propagation check before the mailbox starts
  • Mailboxes connected to your inbox in the dashboard

Warmup

Reputation grows day by day, not overnight.

New mailboxes start with low volume and realistic exchange. Volume rises step by step until the mailbox is ready for real campaigns.

  • 1

    Gradual ramp-up

    Daily volume grows in stages and follows the mailbox's reputation build-up.

  • 2

    Warmup keeps running

    Even during campaigns, warmup maintains reputation. A paused mailbox keeps rebuilding it in the meantime.

  • 3

    You see the status

    Warmup day, status and health of each mailbox are visible in the dashboard.

Daily volume per mailbox

StartRamp-upOperation
VolumeStartRamp-upReady for campaigns
  • Reply received
  • Rescued from spam
  • Marked important

Verification & bounce protection

Every address is checked before it can endanger your mailbox.

Before a campaign starts, we re-check addresses. Each one gets a status. If something still bounces, the system protects the mailbox and keeps your campaign running.

Contact list

Before launch
  • m.weber@maschinenbau-nord.deValid
  • info@kfz-service24.deRisky
  • j.schulz@alte-firma.deInvalid
  • c.hoffmann@logistik-sued.deValid
  • k.braun@catchall-gmbh.deUnknown
  • s.keller@elektro-west.deValid

Verification: Freshly checked before sending

Email status

Valid0

Goes into the campaign

Risky0

Used selectively

Invalid0

Never contacted

Unknown0

Re-checked

Bounce protection

anna@get-firma.deHealthy
1

Bounce detected

Delivery fails. The contact is removed from the campaign.

2

Mailbox rate updated

The bounce rate of the sending mailbox is tracked continuously.

3

Mailbox paused

If the rate crosses the threshold, the mailbox pauses. The campaign keeps running through other mailboxes.

Campaign

Sent via healthy mailboxes

Mailbox health

Three states. Volume adjusts automatically.

Every mailbox has a clear state. Sending follows it, not gut feeling.

Bounce rate

Healthy
Daily volume100%

Daily deliverability report

Paused and quarantined mailboxes show up with the reason in the daily report, so nothing goes unnoticed.

  • Healthy100%

    Placement, reputation and authentication look normal. The mailbox sends at full volume.

  • Degraded50%

    Something measurably got worse. The mailbox keeps sending, but at half volume.

  • Quarantine0%

    Cold sending stops. Warmup continues so the mailbox can regain reputation.

Process

From first call to a mailbox that is ready to send.

We handle the setup. You provide brand and goal and receive mailboxes you can monitor in the dashboard.

  1. 1

    Choose domains

    We choose sending domains that fit your brand and register them.

  2. 2

    Set up DNS

    SPF, DKIM, DMARC and mail routing are set and checked for propagation.

  3. 3

    Create mailboxes

    Mailboxes are created and connected to your inbox.

  4. 4

    Warm up

    Warmup starts automatically. You see day and status per mailbox.

  5. 5

    Send verified

    Addresses are verified, campaigns start, bounce protection watches along.

The foundation

What stands behind every mailbox.

3

Authentication standards

SPF, DKIM and DMARC per domain

4

Email statuses

Valid, risky, invalid, unknown

3

Health levels

Healthy, degraded, quarantine

0

Cold emails from your main domain

It stays reserved for customers and team

Frequently Asked Questions

Answers on domains, warmup, verification and bounce protection.

Next step

Build the infrastructure cold outreach runs on.

We review your current setup, plan domains and mailboxes and show you how verification and bounce protection fit into your sales process.