ZapBounce and Front
Front manages shared inboxes across several teams: support, sales, operations, all on the same domain. That shared identity is the risk.
One team running outreach to an unverified list degrades a domain the other teams use for customer replies.
Several teams, one domain reputation
Sales sending prospecting mail from a Front inbox generates bounces against the company domain. Support's replies from a different Front inbox on the same domain inherit that reputation.
The support team then sees delivery problems they did not cause and cannot diagnose, because their own sending looks clean.
Front's rules and analytics are per inbox, which makes the shared domain effect invisible in the tool itself.
How the data moves
Verify outbound lists before any team uses them
The prospecting list is the source of the bounces, whichever inbox sends it.
Use a separate domain or subdomain for outreach
That is the only real containment when several teams share one Front account.
Store the verdict on the contact
Front contacts support custom fields, so a rule can act on the verdict.
Monitor bounce rate per domain, not per inbox
Front reports per inbox, and the reputation is per domain. That gap is where the problem hides.
Setting it up
- Verify any outbound list before it is used from a Front inbox.
- Move prospecting to a separate sending domain or subdomain.
- Create a custom contact field for the verdict.
- Add a rule that flags conversations where the contact's address is unconfirmed.
- Monitor bounce rates at the domain level rather than per inbox.
- Agree a policy that no team sends to an unverified list from a shared domain.
Front: common questions
Why does support see delivery problems they did not cause?
Because sales is sending from the same domain. Reputation is per domain and Front reports per inbox.
Should outreach use a different domain?
Yes, where several teams share one Front account. It is the only containment that works.
Where should the policy live?
In whatever process creates outbound lists. A tool setting cannot stop somebody pasting a list into a Front inbox.
Seventy-two bounces that support never sent
Say your sales team pastes 800 prospects from an old conference list into a sequence and sends from sales@yourcompany.com through Front. The list is two years old, and 9% of it bounces. That's 72 hard bounces in one morning, all recorded against yourcompany.com.
Your support team sends about 150 replies a day from help@yourcompany.com. Their list is as clean as a list gets, because every recipient wrote in first. For that one morning, though, the domain's failure rate as receivers see it sits near 8%: 72 failures across roughly 950 messages. Two days later a customer says a reply landed in junk, and nothing in support's own Front analytics explains it.
Checking those 800 rows first would have removed the dead addresses before anything left. At our published rate 1,000 checks cost $5, and any row that comes back unknown isn't billed.
Moving outreach to a subdomain, and what that leaves open
A subdomain such as go.yourcompany.com needs its own setup before anyone sends from it. SPF doesn't inherit from the parent, so the subdomain needs its own TXT record. DKIM needs a key published under a selector on the subdomain. DMARC does inherit from the organizational domain, unless you publish a separate record at _dmarc.go.yourcompany.com or the parent record carries an sp tag.
You can check all three with dig in a minute: TXT on the subdomain for SPF, TXT on selector._domainkey.go.yourcompany.com for DKIM, and TXT on _dmarc.yourcompany.com for the policy.
Separation contains most of the damage, not all of it. A new subdomain starts with no sending history, so ramp volume over a few weeks instead of moving all prospecting on day one. It also doesn't make a bad list safe. A subdomain that bounces at 9% gets filtered on its own account, and the prospects you wanted to reach are the ones who never see the mail.
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