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Deliver · Protect

Deliverability that runs your sending.

Most outbound platforms report deliverability data and leave the response to you. SpamCipher acts on it. Every signal it watches changes how your mailboxes send, by default, before a problem costs you a domain.

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  • Every 5 minuteseach mailbox's sending health is decided again
  • On by defaultno rules to write before you are protected
  • Per providerGmail, Outlook and Yahoo paused on their own
The machinery

Everything that makes up our deliverability.

Ten systems watch your domains, your mailboxes, your lists, your content and the replies that come back. Here is all of it, in the order a message meets it.

1Before a message goes out

Authentication

  • SPF, DKIM and DMARC proven to pass on a real message, not assumed from DNS
  • MTA-STS, TLS reporting and BIMI watched
  • Reverse DNS checked for every sending domain
  • Records set up for you, including through Cloudflare

Warm-up and reputation

  • A private seed network that opens, replies to and rescues your mail from spam
  • Your own mailboxes warm each other across domains
  • Volume grows day by day, and only while mail is going out
  • Warm-up pauses itself when a sign-in fails or mail stops going out

Verification

  • Every lead verified before it is sent
  • Catch-all addresses checked against six outside sources
  • Fresh verdicts reused instead of checked again
  • Invalid addresses suppressed automatically

Content and compliance

  • Spam signals scored before launch
  • Phishing, scam and malware patterns block a launch
  • Links, images and Gmail clipping checked
  • One-click unsubscribe on every message, and readiness against Gmail, Yahoo and Microsoft sender rules

2As it goes out

Sending controls

  • Daily caps, ramps, send windows and the recipient's time zone
  • Pacing set separately for Gmail, Outlook and Yahoo
  • Sends moved to the hour your mail lands best
  • Standby mailboxes that keep a campaign's pace

Reading every answer

  • Server deferrals, policy blocks and sender limits
  • Hard and soft bounces
  • Complaints and spam reports
  • Replies and opt-outs stop a person in every campaign

3Watching all the time

Monitoring

  • Blocklists, for your domains and your mail servers
  • Every mail server, website and tracking host checked every 5 minutes
  • DMARC reports from receivers worldwide
  • Your branded tracking host checked end to end

Inbox placement

  • Seed tests across the major providers, read four times in the first five minutes
  • An automatic test for every new mailbox, every sending domain each week, and after any slowdown
  • Every seed earns its trust with a daily control message
  • Email server tests with 20 checks

Sending health

  • Every mailbox is healthy, slowed, resting or held, decided every 5 minutes
  • Six signals behind each decision
  • Steps down at once, climbs back one step at a time
  • Never rewrites the limits you set

The Deliverability Agent

  • Watches the whole picture around the clock
  • Rescans a domain, asks for a delisting, rests or slows a mailbox, pauses a campaign
  • Re-measures, and tells you whether the fix worked
  • Works on its own or asks you first, your choice
How we use it

Every signal changes how you send.

This is the difference. The data does not end in a report or an alert. It is wired into every send decision, so SpamCipher responds while your campaigns are running.

Your domains

  • A domain lands on a major blocklist

    Its mailboxes stop campaign mail at once. A standby mailbox you chose keeps the campaign moving, and on its next check the Deliverability Agent rescans the domain and asks to start the delisting.

  • Every mail server for a domain stops answering

    Sending from that domain holds until the servers are back, then resumes at half pace.

  • Your branded tracking host goes down

    Links switch to the shared tracking host the same moment, so no click lands on an error page.

Your mailboxes

  • Bounces start climbing on a mailbox

    It slows to half pace, and rests if they keep climbing. A placement test is booked for the next day.

  • A placement test comes back weak

    The mailbox slows, and its pace to the provider that junked it is halved.

  • Complaints start to rise

    Mailboxes slow down before a provider steps in.

The providers you send to

  • Gmail, Outlook or Yahoo pushes back

    Only that provider is paused for the mailbox. Mail to every other provider keeps flowing.

  • A mail server asks you to wait

    The mailbox waits and backs off, instead of retrying into a block.

  • Your mail lands better at another hour

    The send moves to that hour, inside the window you set.

Your lists and content

  • An address cannot be trusted

    It is held back from sending unless you choose otherwise. Invalid addresses join your suppression list.

  • A campaign carries phishing or malware patterns

    The launch is blocked before a single message goes out.

  • Someone replies, opts out or complains

    That person is stopped in every campaign, not just the one they answered.

And once it is fixed. Each mailbox climbs back one step at a time, with a placement test checking the inbox along the way.

Why it is different

Where other platforms stop.

Most outbound tools treat deliverability as reports and alerts, with a few responses you can set up yourself. SpamCipher joins every signal to the send decision, out of the box.

WhenTypical outbound platformSpamCipher
A domain is blocklistedShown in a dashboard or sent as an alert. Where sending can stop, it is usually a rule you set up yourself.Sending from that domain holds by default, a standby keeps the campaign moving, and the Deliverability Agent works on the delisting.
Bounces climbA whole campaign or sequence pauses once it crosses a threshold.The one mailbox causing it slows, then rests, while the rest of the campaign keeps sending.
A placement test comes back weakUsually a report. It changes sending only if you write the rule.The mailbox slows and its pace to the provider that junked it is halved, by default.
One provider pushes backPacing follows your own mailbox limits or a fixed matching rule.Only that provider is paused for the mailbox. The others keep flowing.
A mail server goes downNoticed when a mailbox disconnects.Every mail server is checked every 5 minutes, and the domain holds until they are back.
A mailbox needs a restRotation spreads mail across the inboxes already attached.A warmed standby you chose steps in only while one is resting or held.
The tracking domain breaksChecked once, at setup.Checked end to end around the clock. Links fall back the moment it breaks.
AuthenticationSPF, DKIM and DMARC records checked.Proven to pass on a real message, with MTA-STS, TLS reporting and BIMI watched too.

Based on the public documentation of leading outbound platforms, October 2026. Some offer a few of these as rules you configure yourself. SpamCipher does them by default, and makes them work together.

Your results

What that means for you.

Protection that acts on its own does not stay on a feature list. It shows up in the numbers you already watch.

More of every send reaches the inbox

Problems are caught and corrected while a campaign runs, not discovered in next week's report.

Domains that last

A listing or a failing server stops doing damage as soon as it is seen, instead of compounding for days.

Campaigns that keep their pace

Standby mailboxes and per-provider pausing keep mail moving while one mailbox or one provider recovers.

Nobody on watch

There is no dashboard to babysit. The engine and the Deliverability Agent handle it and tell you what changed.

One platform, not five

Warm-up, placement testing, blocklists, DMARC, uptime and verification work together in SpamCipher, so they can act together.

Questions

Deliverability that acts, in plain terms.

Do I have to turn these protections on?

No. Sending health, provider pacing, server replies and the blocklist hold run for every workspace that sends. The Deliverability Agent is the one part you switch on, and it can act on its own or ask you first.

Can I decide how strict it is?

Yes. For each workspace you choose whether a blocklisting, broken authentication or failing DMARC holds sending or only warns you. You can also lift a limit SpamCipher set on a mailbox yourself.

Will it change the limits I set?

Never. When a mailbox slows down, SpamCipher sends below your cap. Your own settings are left exactly as you wrote them.

What about false alarms?

A blocklist that does not answer is never treated as clear, a reading SpamCipher cannot trust does not count, and if mail servers seem to fail across many workspaces at once, nothing is held, because that points to a problem on our side, not yours.

Which providers are paced separately?

Gmail, Outlook and Yahoo each have their own pace and their own pause for every mailbox. Mail to other providers shares one pace.

Put deliverability in charge of your sending.

SpamCipher is an AI-powered sales engagement platform, B2B lead intelligence database, and email deliverability and security suite in one product.

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