Protect sub-accounts.
Eliminate bounce suspensions.
Never let a client's outdated CSV destroy your sending reputation. Keep campaign bounce rates strictly under 1.5% across GoHighLevel, Instantly, Smartlead, and HubSpot — while saving 76% on verification fees.
Built for outbound agency scale
Deliver high-converting appointments and protect sender infrastructure with institutional-grade list sanitization.
Zero Account Suspensions
Keep bounce rates strictly under 1.5%, safely below GoHighLevel and ESP 2% automated suspension thresholds.
Save 76% on List Cleaning
Stop paying $250/100K on native CRM verification. Get full-protocol verification at $59/100K ($299/1M) with non-expiring credits.
High-Speed Client Onboarding
Verify 100,000 client contacts in minutes via bulk CSV uploads or real-time Webhook workflows.
Per-Client API Keys & Exports
Create dedicated API keys for each client pipeline, export categorized CSV/ZIP deliverables, or embed via our Wholesale API.
Everything outbound teams need
Cold Outbound & B2B Lead Scrubbing
Scraped exports from Apollo, Clay, and LinkedIn Sales Navigator routinely contain 8–15% dead mailboxes and 30–40% corporate catch-all domains. Pre-verifying with MailVeri keeps Instantly and Smartlead campaigns strictly below a 1.5% bounce ceiling.
Client CRM Onboarding & Migration
New retainer clients frequently hand over legacy CRM databases that haven't been cleaned in years. Uploading a client's CSV or Excel file to MailVeri before migrating them into Klaviyo, HubSpot, or GoHighLevel prevents first-campaign domain suspensions and cuts active profile costs.
Automate Lead Funnels via API & Webhooks
Connect MailVeri directly to client lead generation forms, Facebook Lead Ads, Typeform, Zapier, Make, n8n, or GoHighLevel sub-accounts. Real-time verification blocks typos and burner domains before invalid prospects enter paid CRM tiers.
Per-Client API Keys & Categorized Exports
Create dedicated API keys for each client workflow and download categorized exports (VALID, CATCH_ALL, INVALID, DISPOSABLE, ROLE_ACCOUNT, FULL_INBOX) so account managers can share clear list-health deliverables with clients—or embed verification via our Wholesale OEM API.
Stop overpaying for CRM email verification
Platforms like GoHighLevel (LC Email) enforce strict 2% bounce limits but charge steep markups for basic list cleaning. MailVeri gives you deep SMTP validation at agency-first pricing.
| Verification Option | Cost per 100K | Credit Expiration | Workflow & API Integration |
|---|---|---|---|
| MailVeri Agency API | $59 | Never ExpiresPay-As-You-Go | Webhook, REST API, MCP Server, Zapier, Make, n8n |
| GoHighLevel (LC Email) | $250$2.50/1k | Tied to Sub-Account Wallet | Native UI only |
| Mailgun via HighLevel | ~$685~$6.85/1k | Monthly Billing Plan | Direct SMTP only |
| NeverBounce | $400$4.00/1k | 12-Month Expiration | API & CSV |
Agency Implementation Playbooks & Technical Guides
Frequently Asked Questions for Cold Outbound Agencies
Why do Apollo "Verified" B2B leads still bounce at 8–15% in Instantly and Smartlead?
B2B lead databases rely on cached verification timestamps that can be 30 to 180 days old, and they frequently bundle unverified corporate catch-all domains inside their "Verified" filter. Running your exported CSV through MailVeri ($59 per 100,000 credits) isolates VALID from CATCH_ALL and INVALID right before launch so your cold outreach domains stay strictly under a 1.5% bounce rate.
How do we prevent GoHighLevel (LC Email) sub-account bounce suspensions?
GoHighLevel automatically pauses LC Email sub-accounts when hard bounces cross 2–3%. By connecting MailVeri via n8n, Make, Zapier, or bulk CSV upload before launching client sequences, you strip invalid, disposable, and full-inbox addresses for $0.59 per 1,000 checks instead of paying $2.50 per 1,000 inside GHL.
Can our agency verify client CRM lists before migrating them to HubSpot, Klaviyo, or ActiveCampaign?
Yes. Upload CSV or Excel files up to 1,000,000 rows in the dashboard or connect via REST API, Zapier, Make, and n8n. Every completed batch gives your account managers pre-segmented exports (Valid Only, Catch-All, Invalid, Disposable, Full Inbox) ready for clean CRM import.
Can we call MailVeri directly inside Clay tables without burning Clay credits?
Yes. Using Clay’s HTTP API enrichment column to call `POST https://api.mailveri.com/v1/verify-mail/` with your own MailVeri API key verifies waterfall-enriched emails at $0.0002–$0.00059 per check—saving 80%+ compared to native Clay credit markups.
Ready to scale your outbound agency?
Protect client domains, guarantee inbox placement, and pocket an extra 76% in gross margin.
Explore Related Verification Benchmarks, Integrations & Deliverability Hubs
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