Keep your Copper contacts clean and deliverable
Copper is a CRM built to live inside Google Workspace, but it has no deliverability engine — it trusts that the email on every record is real and never checks. That's the gap Qualisend closes: the native Copper connector verifies your contacts in place and writes the result back to each record as a tag, archive, or suppression, while the REST API and no-code flows keep new addresses clean at the point of capture. Below is the manual CSV workflow too, for when you'd rather drive it yourself.
Connect Copper and clean it in place
Connect Copper 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 CopperWhat Copper cleans for you
Copper is a sales CRM built to live inside Google Workspace, not a deliverability engine, so its list hygiene is deliberately light. It offers real duplicate detection with merge suggestions and lets you tag, filter, and bulk-edit People and Leads, which keeps records tidy — but there is no bounce-driven status model, no "cleaned" or suppressed flag, and nothing that marks an address invalid after it fails. Because Copper sends bulk email and sequences through your connected Gmail account, any actual bounce handling happens in Gmail, not on the Copper record — the contact stays exactly as it was, ready to be mailed again. Copper simply trusts that the email on a record is real.
What it can't catch
Because Copper never checks whether an address exists, everything that has never been mailed looks healthy on the record: typos and never-mailed invalids from imports and web forms, disposable throwaways, role addresses like info@ and support@, mailboxes that decayed since capture, and catch-all domains that accept anything at the door. Copper's Gmail integration makes this worse by auto-creating People from email threads, so no-reply and one-off addresses quietly become contacts. Whatever thin signal you might get is reactive — it needs an actual send and a Gmail bounce to surface, long after the damage is done. And an imported list is the sharpest case: it arrives with its bounce history stripped, so an address that was already failing elsewhere looks brand new in Copper.
Why a clean Copper list matters
Copper prices per seat rather than per contact, so dead records don't show up as a line on your invoice the way they do on an ESP — but they still cost you. Your reps burn time working inboxes that will never reply, your plan's contact-record cap fills with junk that can force an upgrade, and most importantly Copper's bulk email and sequences send through your connected Google Workspace account. That means a wave of hard bounces lands on your own company domain's reputation — the exact address you run your whole business on — and Gmail and Yahoo's 2024 bulk-sender rules judge that domain directly on its bounce and complaint rates. Cleaning before you send protects both your reps' time and the deliverability of the domain you can least afford to burn.
Prefer CSV or the API? Here's the manual path
Prefer not to wrangle files? The native Copper connector runs this whole loop in place — here's the manual version if you'd rather drive it yourself.
Export your People from Copper
Open the People list (or Leads), apply a filter or saved view to target the records you want to clean, then bulk-select and choose Export to CSV; account admins can also pull a full export from Settings > Export. Keep the email column so results line up on reimport.
Verify the file in Qualisend
Upload the CSV to Qualisend bulk cleaning — up to 1,000,000 addresses per job, duplicates charged once — or paste a sample into the free checker first. The free plan's 100 one-time credits, which never expire, cover an initial spot-check.
Read the results
Every address returns deliverable, risky, undeliverable, or unknown with a reason code, a 0–100 confidence score, and sub-flags (catch-all, disposable, role, full mailbox), plus the MX provider and SMTP probe detail as evidence. Download the cleaned CSV.
Act on the record in Copper
Copper has no suppression list, so you act on the records directly. Filter your Qualisend results to undeliverable, match them in Copper, then bulk-apply a tag like "invalid-email" so they're excluded from every bulk-email and sequence audience, archive the dead Leads, or bulk-delete verified-dead junk from the People list. Keep the cleaned CSV so a future import or Gmail auto-create doesn't silently re-add them.
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 a no-code Zapier, Make, or n8n flow, so every new Copper Person — including the ones Copper auto-creates from Gmail threads — is checked before it lands and typos and disposable addresses never reach a send. Once the native connector is connected it goes further, verifying new contacts in real time and re-cleaning on a schedule.
What Qualisend flags on every address
- Never-mailed invalid addresses that would hard-bounce on your next Copper sequence or bulk email — off your own Google Workspace domain
- Disposable / throwaway domains built to expire
- Role addresses (info@, support@) — including the no-reply and notification addresses Copper auto-creates from Gmail threads
- Catch-all domains, flagged so you can tag them into a separate segment and throttle your sends
- A 0–100 confidence score and machine-readable reason code for every address
The native Copper 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 Copper list clean without throwing away contacts you can still reach.
deliverableKeep in your send audiences and mail as normal.deliverable + role flagKeep for one-to-one outreach; tag it out of the bulk-email and sequence audiences that engagement is judged on.risky + catch-all flagTag into a separate segment and throttle — the domain accepts everything at the door, so the mailbox behind it can't be confirmed.risky + disposable flagDelete or archive — the inbox was built to expire.unknownLeave the record as is and re-verify next clean — usually greylisting or rate-limiting, not a verdict on the mailbox.undeliverableTag it out of every send now, and bulk-delete (or archive the Lead) to clear it off your record cap; don't wait for the Gmail bounce to prove it.Related reading
Verify at capture so junk never becomes a Copper contact — including the People Copper auto-creates from Gmail.
How fast a dirty Copper list compounds into a deliverability problem on your own domain.
The platform-agnostic playbook behind the workflow above.
Why B2B teams running a CRM like Copper can't skip verification before they send.
Copper verification FAQ
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