How to Catch a One-Contact Account Going Quiet Before It Costs You the Renewal
Some accounts look fine until you notice one contact is holding the whole relationship together, and that contact has just unsubscribed. Here is the HubSpot list and workflow that flags it and puts an owner on the fix.
Step 2: Trigger a workflow from the list
1) Create the workflow
- Go to Automations → Workflows
- Click Create workflow
- Choose Company-based workflow
2) Set enrolment trigger
Use the active list from Step 1 as the enrolment trigger. If you are not sure which of your lists are already doing work, start with reporting on active list usage in workflows.
Your workflow should enrol when:
- Company is a member of At-Risk Accounts | Single Contact Unreachable
This means the workflow runs as soon as a company becomes at-risk.
3) Add a “create note” action for context
Add an action to create a note on the company record so the risk is obvious to anyone who opens it.
Note content example (copy-ready):
- Why flagged: Company has only one associated contact
- Risk: That contact is unsubscribed or has hard bounced (unreachable)
- Next step: Add additional contacts at this company to reduce single-thread risk
Keep it plain and specific. The goal is “someone can act in 10 seconds”.
What the Spam Act requires once they opt out
Worth being clear about what you are looking at. Under the Spam Act 2003, which ACMA administers, every commercial electronic message you send has to carry a working unsubscribe facility, and a request has to be honoured within five business days. Once your only contact at an account opts out, there is no marketing route back in, and the difference between express consent (they asked for it) and inferred consent (they had an existing business relationship with you) does not give you one either.
That is why this belongs in a company workflow rather than a marketing report. The permission has gone, the relationship has not, and someone has to go and rebuild it by phone or in person.
Step 3: Escalate if there is an open deal (or if this is a customer)
1) Add an if/then branch
Add a branch like:
- If company has an open deal → escalate
- If not → just leave the note (or notify a success queue, depending on your process)
If you already run scoring deals to find the at-risk ones, this branch is the same idea pointed at the relationship instead of the deal.
How many accounts rest on one contactable person?
The number is usually higher than the account list suggests.
2) Create a task for the deal owner
In the “open deal” branch, create a task assigned to the deal owner (or the account owner if that fits your setup better).
Task title ideas:
- At-risk account: only contact unreachable
- Deal risk: rebuild contacts at company
Task notes example: This deal is at risk. The only associated contact has unsubscribed or hard bounced. Please review and build relationships with additional contacts at the company.
This makes the risk:
- Owned by the right person
- Visible in task queues
- Tied to the commercial impact, not just marketing activity
3) Customer escalation option
If you also want this for customers, add another branch based on lifecycle stage or account type (whatever you use internally), then:
- Notify the customer owner
- Create a renewal risk task
- Or set an “At-Risk Account” property for reporting
Optional enhancements (worth doing if you want this to scale)
1) Add an “At-Risk Account” property on Company
Create a boolean or dropdown like:
- At-Risk Account = Yes/No
- Or Account Risk Level = Low/Medium/High
Then update it in the workflow. This makes it easier to report on risk beyond list membership.
2) Use different thresholds by segment
Examples:
- SMB: minimum 2 contacts
- Enterprise: minimum 5 contacts
- Customers: stricter than prospects
3) Alert levels based on contact count
You can create tiers:
- Red: 1 contact unreachable
- Yellow: 2 contacts but both unsubscribed
- Green: 3+ contacts with at least one reachable
4) Apply across Sales and Service
Same concept works for:
- Sales deals (pipeline risk)
- Service accounts (support relationship risk)
- Renewals (if your process uses deals for renewals)
Rebuilding the contact list is the part that stalls. If the new names arrive through a form, a chat or an inbound enquiry rather than a rep typing them in, creating a lead record automatically stops the fix depending on someone remembering.
Wrapping Up
This hack connects the dots between:
- Marketing data (bounces, unsubscribes)
- Commercial reality (single-thread relationships)
It catches risk early, stops deals failing silently, and nudges teams towards multi-threading. Cheap to build, and one of those setups that makes you wonder why it was not there already.
If an account has one contact and that person is unreachable, you do not have a relationship, you have a single point of failure. This setup helps you catch that early, flag it clearly in HubSpot, and put an owner on fixing it.
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Wondering which accounts are already unreachable?
Nothing in HubSpot goes red when the last email address dies.
Happy HubSpotting.