PersistIQ runs SDR sequences. One bad list can damage the entire sending domain.
PersistIQ is a sales engagement platform built for outbound SDR teams. It supports email sequences, CRM sync, and team-level reporting designed around the SDR workflow — prospecting, outreach, and handoff.
Small and mid-sized SDR teams using PersistIQ often share a single sending domain. That creates a risk concentration that larger enterprise senders do not face in the same way: when one SDR imports a bad list and runs a campaign with high bounce rates, the domain reputation damage affects every other rep sending from the same domain. Deliverability is a shared asset, and it is degraded by whichever campaign generates the most bounces — not by an average.
This is why pre-import verification matters more on shared infrastructure, not less. The consequence of a bad list import is multiplied when the sending domain belongs to the whole team.
Cold Email Verification Framework
This page covers one sender or workflow. The full framework explains the complete path from list source through verification, segmentation, and import into your sender.
What to check before PersistIQ import.
SDR lists typically come from CRM exports, Apollo searches, LinkedIn Sales Navigator, or manually assembled prospect files. Before any list enters a PersistIQ campaign, verify at the field level.
| Field | Why it matters |
|---|---|
| The address that enters the sequence — must be valid and deliverable | |
| Domain | Determines catch-all status, MX validity, and whether the target company is still active |
| Source | CRM export, Apollo, LinkedIn, manual — each source has different freshness and accuracy |
| Suppression status | Prior bounces and opt-outs should be excluded from all new campaigns |
| List age | Lists sourced more than 90 days ago carry meaningful staleness risk — re-verify before use |
The risk each signal type creates.
On shared sending infrastructure, every signal type has implications that go beyond a single SDR's campaign metrics.
| Signal | Delivery behavior | Risk to PersistIQ campaigns |
|---|---|---|
| Invalid | Permanently rejected | Hard bounce — direct damage to shared sending domain reputation |
| Catch-all | Domain accepts all addresses, mailbox uncertain | Delivery uncertainty that inflates bounce exposure for the whole domain |
| Role-based | Shared inbox (info@, contact@, help@) | Low engagement, potential complaints — not a named individual prospect |
| Disposable | Temporary or low-trust address | Not a real business contact — remove before campaign start |
| Unknown | Verification result inconclusive | Exclude from active campaigns without further manual review |
| Duplicate | Same address in multiple SDR campaigns | Repeated sends from different reps, increased complaint risk |
Verify before import — not after bounce.
SDR teams often work under quota pressure. That pressure creates the temptation to skip verification and launch quickly. The problem is that a bounced campaign does not just miss quota — it can damage the sending domain enough to reduce deliverability for the entire team in subsequent weeks.
Collect list from source
→ Normalize and deduplicate
→ Verify with BillionVerify
→ Apply routing decisions by signal
→ Import approved records into PersistIQ
→ Load verified contacts into PersistIQ campaigns
The verification step is not an obstacle to launching faster — it is the step that protects the domain health that makes future launches possible. An SDR team that sends on a healthy domain consistently outperforms one that has to recover from reputation damage after a bad list import.
Route each result before PersistIQ sees it.
| BillionVerify result | Action |
|---|---|
| Valid | Import into PersistIQ and enroll in target campaign |
| Invalid | Do not import — add to team-wide suppression list |
| Catch-all | Separate campaign with lower volume and closer monitoring |
| Role-based | Separate campaign with messaging appropriate for a shared inbox |
| Unknown | Hold for manual review — exclude from active campaigns |
| Risky or disposable | Do not import |
For SDR teams, a team-wide suppression list is important. Individual reps should not be making independent decisions about whether to import an address that another rep has already seen bounce. A shared suppression file prevents the same bad addresses from cycling through multiple reps' campaigns.
After the list is verified.
Once verified contacts are in PersistIQ:
- Valid contacts enroll in primary SDR sequences at standard cadence
- Catch-all contacts run in a lower-volume, closely monitored separate campaign
- Role-based contacts receive messaging that fits a shared inbox context — not individual personalization
- Invalid and risky contacts are added to the team-wide suppression list and excluded from all future imports
- Unknown contacts sit in a review queue before any campaign assignment
The health of the sending domain is a team-level asset. Managing it requires consistent verification standards across every SDR importing lists, not just the reps who happened to get burned by a bad import.
Other senders with similar pre-import decisions.
Instantly Email Verification
Verify before importing lists into Instantly campaigns and warmup sequences.
GMass Email Verification
Clean Google Sheets lists before GMass sends them through Gmail.
Smartlead Email Verification
Set a pre-import quality gate for high-volume Smartlead campaigns.
Lemlist Email Verification
Verify lists before multi-channel Lemlist campaigns — before enrichment becomes a liability.
Salesloft Email Verification
Apply a pre-import quality gate before records enter Salesloft sequences.
Outreach Email Verification
Verify emails before Outreach sequence enrollment to protect enterprise sender reputation.
Mailshake Email Verification
Clean lists before Mailshake campaigns — keep bounce rate low for small outbound teams.
Reply.io Email Verification
Verify emails before Reply.io sequences to prevent invalid records from entering automated workflows.
Mailmeteor Email Verification
Check Google Sheets contacts before Mailmeteor sends Gmail merge campaigns.
QuickMail Email Verification
Apply a pre-import quality gate before contacts enter QuickMail inboxes.
Saleshandy Email Verification
Verify lists before Saleshandy campaigns to protect deliverability at lower send budgets.
Woodpecker Email Verification
Set a pre-import verification step for Woodpecker campaigns and agency clients.
Klenty Email Verification
Verify emails before Klenty cadences to keep CRM-sourced contacts clean.
Close CRM Email Verification
Clean email records in Close before sequences run — protect CRM contact quality.
Yesware Email Verification
Verify lists before Gmail-based Yesware campaigns to reduce bounce exposure.
Overloop Email Verification
Apply a pre-send quality gate before contacts enter Overloop sequences.
Mixmax Email Verification
Verify emails before Mixmax Gmail sequences to prevent bounce damage.
Lavender + BillionVerify Workflow
Verify the list before Lavender helps write messages — clean data improves AI targeting.
Autoklose Email Verification
Verify emails before Autoklose sequences — protect automated sending from list risk.
SendBuzz Email Verification
Apply a pre-import gate before SendBuzz campaigns to keep bounce rate low at scale.
PersistIQ email verification common questions.
1. Does PersistIQ include email verification before campaigns run?
PersistIQ does not apply a dedicated pre-import deliverability check. Contacts enter campaigns based on import and enrollment criteria. BillionVerify adds the quality gate before the import stage.
2. Our SDR team shares a sending domain. How does that change the verification approach?
It raises the stakes. Bounce damage on a shared domain affects every rep sending from that domain — not just the rep who imported the bad list. Treat verification as a team standard, not an individual decision. Centralize the suppression list and enforce consistent quality rules across all imports.
3. Can I use a purchased list in PersistIQ?
Purchased lists carry a high proportion of invalid, stale, and role-based addresses. Any list from a purchased source should go through BillionVerify before it enters PersistIQ. Depending on the quality of the source, you may need to discard a significant portion of the records. The verification step makes the decision explicit rather than discovering the problem through bounce rates.
4. How do I manage suppression across multiple SDRs in PersistIQ?
Maintain a shared suppression file that all reps use when importing new lists. After each campaign, update the suppression file with addresses that bounced, opted out, or were flagged. Before a new import, check the new list against the suppression file and remove matches before running verification.
5. What happens to my PersistIQ campaign data if I have invalid addresses in the list?
Bounce events from invalid addresses are recorded in your campaign data and inflate your bounce rate. That distorts your performance metrics — open rates, reply rates, and conversion metrics all look worse because of undeliverable sends that never had a chance to succeed. Verification before import removes this noise from your data.