A HubSpot export is CRM data, so each row carries deal associations, lifecycle stage, form submissions and whatever sales typed into a note. The email address is one column among hundreds and the record belongs to several teams at once.
Getting the addresses out of HubSpot
Contacts, filter to the list you want, then Export with the email property selected. HubSpot emails the file.
Before promoting anyone to a marketing contact. That designation is the billing event and the sending event at the same time, so checking beforehand is the only moment where the result changes both.
What HubSpot does with the file you bring back
The import rules decide what a re-import actually changes, which is worth knowing before you upload.
The short version
- HubSpot deduplicates on email address by default and updates the existing contact, so re-importing a verified file enriches rather than duplicates.
- A contact whose Marketing email bounced flag is set stays blocked after an import. Clearing it is a deliberate action, and doing it in bulk is rarely a good idea.
- Marketing contact status is the billing lever. Import as non-marketing and promote deliberately.
- Custom properties import cleanly, so the verification verdict and its date can live on the record.
The mistake to avoid
Some addresses come back unresolved, and that is a fact about the receiving server rather than a gap in the check. We label those and never bill for them. What that means, and why roughly 28% of business addresses land there, is set out on our page about catch-all domains.
Questions people ask
Where do I verify in a HubSpot workflow?
Export the contacts you intend to designate as marketing, check them, and import the verdict back as a property before promoting them. That order keeps the bill and the reputation honest.
Should role addresses be removed from a B2B list?
Not automatically. info@ and sales@ are frequently the right contact at a small company. Flag them, segment them, and write to them differently rather than deleting them.
How do catch-all domains affect a B2B list in HubSpot?
Heavily. Around 28% of addresses in a 10,000-email B2B benchmark sat on catch-all domains, and no verifier can confirm those mailboxes. Segment them rather than treating them as valid or deleting them.