HubSpot Gotcha #1: Identity De-duplication
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This gotcha is one that most HubSpot users have no awareness of, but are affected by. Even if you take no action after reading this, it’s very important to know how identity de-duplication works.
Envision the following scenario, if you will. You e-mail a list of prospects to promote an exclusive webinar.
One of your prospects, Dwight Schrute, opens the email and thinks, “Wow! This is the most amazing webinar topic I’ve ever seen!” He clicks the link, fills out the web form, and registers for the event.
Then, it occurs to Dwight that his collegues Jim and Pam would also love this webinar, so he reloads the landing page and registers them, too.
Not only did your champion Dwight reconvert, but now we have 2 new leads from Dunder Mifflin to nurture. Awesome, right?
Not so fast.
What actually happens
Behind the scenes, all 3 form submissions are merged into the original Dwight Schrute contact record! Because each of the form submissions happened within the same browser session, with the same cookies, we don’t get new contact records for Jim and Pam.
In fact, the very last form submission steals Dwight’s identity. Now Pam is the only Dunder Mifflin lead we have in HubSpot and all of Dwight’s prior activity is attributed to her.
Perhaps the worst of it is that you have no way of knowing when this happens. Brand new leads can evaporate and you wouldn’t even know it.
5 minutes ago this was Dwight’s profile. Now it belongs to Pam:
There are other common scenarios that trigger this problem, as you can imagine. The two that I find most commonly are:
- People sharing computers
- A salesperson or partner registering on behalf of a customer/prospect (this is a big one)
How it works
HubSpot’s identity de-duplication logic works like this:
- If the user token stored in the browser’s cookie matches an existing contact record, form submissions from that browser session will be merged into the existing contact record regardless of the data being submitted
- If there’s no cookie match, form submissions will de-duplicate based on email address
- If the email address being submitted doesn’t match an existing contact record, a new contact will be created
The rationale behind the way HubSpot de-duplicates is based on a concept called sandbagging.
The idea is this: Dwight browses your website a few times. You’re tracking his movement with a cookie. Eventually, he downloads an ebook with his firstname.lastname@example.org address because he doesn’t trust you yet.
At that moment, all of Dwight’s previously anonymous activity is associated with his new identity email@example.com.
The ebook is legit and two weeks later Schrute requests a live demo of your product from the sales teams. This time, he uses firstname.lastname@example.org.
Now, HubSpot doesn’t want to create a new contact record just because Dwight’s email address changed. Doing so would mean that we wouldn’t associate any of the activity (visits, submissions, etc.) that occurred prior to requesting the demo.
By using the cookie to de-duplicate the identities, HubSpot can group all of Dwight’s historical activity under one record. In the example above, and in many cases, this behavior is exactly what we’d want.
Best practices for preventing lead merging
First, tell salespeople and partners to always use an incognito browser window or clear their cookies when submitting forms on behalf of prospects and customers. If they’ll listen, great! Unfortunately, this won’t work for people outside of your organization (e.g., the Dwight, Jim, Pam scenario), but I’ve found the biggest offenders are in-house.
HubSpot also has a built-in way for you to disable cookie tracking on a form-by-form basis. If you have a form where you know that one person will be making multiple submissions on behalf of others, you can disable that functionality:
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