Keep your Close leads clean and deliverable
Close logs every send on the lead's activity timeline and marks a message bounced the moment it fails, but it can't judge an address a rep has never emailed — and those never-mailed invalids from list imports and web forms are what waste rep time and quietly burn your sending domain. Qualisend closes that gap: connect Close directly through our native connector to verify and clean contacts in place, or run the CSV loop and REST API as a manual pass. Either way, junk gets caught before a rep dials it or a sequence bounces off it.
Connect Close and clean it in place
Connect Close and Qualisend verifies the contacts in your pipeline in place — no export. Bad addresses are flagged on the record, every new contact is checked in real time, and you can re-verify on a schedule so your reps never chase a dead inbox.
Prefer to work by hand, or verify at signup through your own stack? The CSV export → verify → reimport loop below and the REST API are fully supported too.
Connect CloseWhat Close cleans for you
Close's built-in hygiene runs on what it observes when you actually send. Every email your reps or sequences send is logged on the lead's activity timeline, and when a message hard-bounces Close marks that activity as bounced so the failure is visible right on the record. Inside a sequence, a hard bounce stops further steps to that contact, and contacts who opt out or unsubscribe are respected and skipped on future bulk emails and sequences. For addresses Close has actually emailed, that's dependable, reactive housekeeping.
What it can't catch
The catch is that every one of those signals is reactive — it needs a rep to send and the message to bounce before anything fires. Never-mailed invalids from imported lead lists and web-to-lead forms, disposable addresses, role addresses like info@, catch-all domains, and mailboxes that decayed since you captured them all look perfectly workable until the first send proves otherwise. An imported lead list is the sharpest case: it arrives with its bounce history stripped, so addresses that were already failing elsewhere look brand new in Close. Until a rep burns a send on them, Close has no way to tell them apart from real prospects.
Why a clean Close list matters
Close doesn't bill by contact — it charges per seat — so the cost of a dirty list isn't your invoice, it's your reps and your domain. Every dead address is a rep's minutes spent researching, dialing, and emailing an inbox that was never going to answer. And because Close sends from your own connected mailbox and domain, every bounce off an invalid address lands on your real sending reputation — under Gmail and Yahoo's 2024 bulk-sender rules, a high bounce or complaint rate throttles the inbox placement of the very sequences that book meetings. Cleaning before you send protects both the rep hour and the domain.
Prefer CSV or the API? Here's the manual path
The native connector is the fastest route, but the CSV loop works on any Close plan: export from Close, verify in Qualisend, and act on the results.
Export your leads from Close
Build a Smart View (or filter your Leads or Contacts) for the segment you want to clean, then use Export to download a CSV of leads or contacts with their email addresses.
Verify the file in Qualisend
Upload the CSV to Qualisend bulk cleaning — up to 1,000,000 addresses, duplicates charged once — or paste addresses directly. The free plan's 100 credits cover a first sample.
Read the results
Every address returns deliverable, risky, undeliverable, or unknown with a reason code and sub-flags (catch-all, disposable, role, full mailbox), plus the MX provider and probe detail as evidence. Download the cleaned CSV.
Tag or delete the dead in Close
Filter the cleaned file to undeliverable, then in Close bulk-edit those leads to add a tag or custom field (like "Email: undeliverable") and build a Smart View that excludes them from every sequence and bulk email — or delete the genuine junk outright. A tagged record stops a future import from silently re-adding a known-bad address.
Or automate it at signup
Prefer to keep junk out from the start? Verify at the point of capture with the Qualisend REST API (scoped keys, rate limits, webhooks), or wire a no-code Zapier, Make, or n8n flow so a new Close lead — from a web-to-lead form or a bulk import — is checked before a rep ever works it or a sequence ever emails it.
What Qualisend flags on every address
- Never-mailed invalid addresses that would hard-bounce the first time a rep or sequence emails them
- Disposable / throwaway domains built to expire
- Role addresses (info@, support@) that rarely reach a decision-maker and skew your sequence stats
- Catch-all domains, flagged so you can tag and throttle them instead of blasting
- A 0–100 confidence score and machine-readable reason code for every address
The native Close connector is live — connect it in Qualisend under Integrations and clean your list without a single CSV. New contacts are verified automatically, and you can re-verify on a schedule.
What to do with each result
Every address comes back with a verdict and sub-flags. Here's the action that keeps your Close list clean without throwing away contacts you can still reach.
deliverableKeep working the lead — email and call as normal.deliverable + role flagKeep for direct rep outreach; tag it and exclude from bulk sequences.risky + catch-all flagTag and move to a dedicated Smart View; throttle sequence sends and confirm on the first reply.risky + disposable flagDelete, or tag as junk — the inbox was built to expire.unknownKeep the lead active and re-verify next clean — usually greylisting, not a verdict on the mailbox.undeliverableTag it undeliverable and exclude from every sequence, or delete it; don't wait for the bounce to prove it.Related reading
The full step-by-step behind the Close workflow: export, verify, and retire the dead addresses.
How fast a dirty lead list compounds into a domain reputation problem for your sequences.
Verify leads at the point of capture so junk never reaches a rep's queue.
Why sales and product teams verify addresses upstream instead of eating the bounces.
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