Before you turn on HubSpot email sync, decide who becomes a contact
Turn on email logging with contact creation, and every address your reps email can become a contact. A month later the database holds your freight carrier, your bank, three newsletters and a noreply address. The contact count goes up, the marketing list gets worse, and the people reps actually sell to are harder to find.
The fix isn't a setting. It's a decision you make before you turn anything on: which senders are allowed to become contacts.
Why email sync fills HubSpot with the wrong contacts
HubSpot's Outlook add-in can create a new contact for any address you log that isn't already in the CRM. That's what you want for a new prospect. It's also how a supplier's billing address ends up on a marketing list. When nobody decides who belongs, every rep's inbox decides for them.
Pull two months of domains and sort them
Before you switch anything on, pull the domains your sales team emailed with over the last two months. Sort every one into two lists.
Exclude:
- Automated senders: noreply, notifications, system alerts.
- Service providers: your bank, your carrier, your software vendors' billing.
- Associations and newsletters.
- Personal email domains, with the exception covered below.
Include:
- Customers.
- Prospects.
- Vendors you buy from, if reps work with them.
Have the owner or sales leader sign off on the lists, not IT. Who counts as a contact is a business decision.
Decide which company each contact joins
Most businesses associate a new contact with the company that matches its email domain. Distributors have to choose between the bill-to and the ship-to, because one customer can have both. We associate to the ship-to, not the bill-to. Head office pays the invoice. The rep sells to the location.
Plan for real customers on personal email
Some buyers use a personal address: contractors, small shops, owners who never set up a company domain. Their domain tells you nothing about the company. Decide up front how they get in: the rep creates them by hand and links the company, or they land on a review list someone works every week.
Put the exclude list where the sync reads it
In HubSpot's Outlook add-in, an admin can add addresses and domains to a never log list and block them for all users. Emails sent to anything on that list never save to the CRM. Load your exclude list there. If you log email another way, the same list goes into that tool's filter.
When the native add-in isn't enough
HubSpot documents the add-in for desktop Outlook and Outlook on the web, and each rep's inbox carries its own settings. That suits a team at desks. Outside reps who answer email from a phone are a harder fit.
For one distributor in that position, we're building a server-side sync instead. It logs email from the mailboxes directly, so no rep has to sign in or open a laptop, and it applies the exclude list in one place. The trade-offs: no open or click tracking, and it carries a running cost the native add-in doesn't.
What to do this week
- Pull two months of email domains from your sales team.
- Sort them into exclude and include, and get the owner to sign off.
- Decide which company record new contacts join.
- Load the exclude list into the never log list before turning on contact creation.
Already running HubSpot with email logging on? Request your free HubSpot audit →
Related: HubSpot lead source attribution setup → · Standardize before you deduplicate →
FAQ
Should HubSpot create contacts automatically from emails?
Only for senders you've decided belong. Sort two months of email domains into exclude (automated senders, service providers, associations, personal) and include (customers, prospects, vendors). Load the exclude list into the never log list, then turn contact creation on.
How do I stop HubSpot logging emails from certain domains?
Use the never log list. An admin can add addresses or domains and block them for all users, and emails sent to anything on the list never save to the CRM. Build the list from a review of real email domains, not guesses.
Which company should an email contact join for a distributor?
Decide before you turn on the sync. We associate new contacts to the ship-to, not the bill-to, because the rep sells to the location while head office pays the invoice. Contacts on personal email domains go to a review list or get linked by hand.