The HubSpot playbook

HubSpot sends the email. Your domain still has to earn the inbox.

HubSpot connects and authenticates your own sending domain and, on its dedicated IP add-on, warms the IP for you. A domain that has never sent email is a separate job, and HubSpot’s own guidance says to warm it as well. Keep your emails and sequences exactly where they are. Add the domain here and we build its reputation while HubSpot keeps sending.

Start warming my domainSee Inbox Boost
The HubSpot playbook

Keep sending from HubSpot. Warm the domain here.

Step 1

Connect your sending domain in HubSpot

Until you do, HubSpot rewrites the From address on marketing email to a HubSpot-managed domain, so recipients do not see yours. Connecting takes two DKIM CNAME records, HubSpot’s include added to your existing SPF record, and a DMARC record.

Step 2

Know what HubSpot warms, and what it does not

With the dedicated IP add-on, HubSpot warms the IP automatically, gradually moving traffic over from its shared IPs. That warmup is for the IP. HubSpot says a sending domain that has never sent email should be warmed as well, and on shared IPs there is no warmup feature at all.

Step 3

Add your brand domain to Inbox Boost

Use the domain in your From address, yourbrand.com. Any sending subdomain HubSpot sets up for you stays with HubSpot. We set up what it needs and build its sender reputation. Nothing to connect to HubSpot: no API key, no app, no change to your portal.

Step 4

Keep every email and sequence running in HubSpot

Newsletters, workflow emails, and the sequences your reps send through their connected Gmail or Outlook inboxes: all of it stays as it is. Mailbox providers score the domain in your From address, so the reputation built here counts for every HubSpot send from yourbrand.com.

Step 5

Check where HubSpot mail lands

Inbox placement tests show whether your emails reach Primary, Promotions or Spam across the major mailbox providers, and blacklist monitoring keeps watching the domain once it is warm.

  • Nothing to connect: no HubSpot API key, app or integration
  • Nothing to change: workflows, lists, sequences and templates stay exactly as they are
  • Shared or dedicated IP: it works either way, because the reputation belongs to the domain
  • Watched after warmup: blacklist and authentication monitoring on your brand domain
Features HubSpot senders lean on

The parts of the platform this plan leans on.

Feature

Inbox Boost

Add a domain. We provision the sending server and publish your DNS.

Learn more Feature

Guided DNS setup

We write SPF, DKIM and return-path into your zone, not you.

Learn more Feature

Inbox placement testing

See whether you land in Primary, Promotions or Spam across providers.

Learn more
See it play out

A HubSpot domain, warmed without pausing a single send.

Four checkpoints, in order. Click any step or let it play.

hubspot · info.yourbrand.com
DKIM (two CNAMEs)verified
From domainyours
sending historynone yet
Questions

HubSpot questions, answered.

Does Inbox Boost connect to my HubSpot account?
No. There is no API key, app or integration to install. Inbox Boost works on your brand domain, and HubSpot keeps sending your emails and sequences exactly as it does now.
HubSpot already warms dedicated IPs. Why warm the domain too?
HubSpot’s automatic warmup belongs to the dedicated IP add-on and moves traffic onto that IP. Your brand domain carries its own reputation with Gmail, Outlook and Yahoo, and HubSpot’s own article says that if the domain has never sent email, you should warm it up as well.
I am on HubSpot’s shared IPs. Does this still help?
Yes. Shared IPs are pooled with other HubSpot senders and come with no warmup feature, so the domain is the reputation that is actually yours. Building it here helps every email HubSpot sends from it.
What about sequences sent from my reps’ inboxes?
HubSpot sends sales sequences and one-to-one email through each rep’s connected Gmail or Outlook inbox, so the mailbox provider’s own limits apply rather than HubSpot’s infrastructure. If those inboxes send from your brand domain, the reputation built here counts for that mail too.
Can I see whether it is working?
Yes. Inbox placement tests show where your HubSpot mail lands, Primary, Promotions or Spam, across the major mailbox providers, and blacklist monitoring keeps watching the domain afterwards.
About the HubSpot facts on this page

Checked against HubSpot's own documentation on 12 October 2026. HubSpot is a trademark of its owner; SenderSignal is not affiliated with it.

Other crm & all-in-one: GoHighLevel, Salesforce, Zoho, Pipedrive, Keap. All use cases.

HubSpot keeps sending

Warm the domain behind your HubSpot email.

Start free, add the domain, and keep every workflow and sequence running in HubSpot while its reputation builds.

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