Multi-inbox cold email that actually lands in the inbox
Send from many Gmail or Outlook inboxes, handle bounces and unsubscribes, and integrate with warmup tools.
What's slowing your outbound down
How it works
From zero to live campaign in an afternoon.
Add unlimited Gmail or Outlook inboxes via OAuth in one click.
We check SPF, DKIM and DMARC and walk you through fixing anything missing.
Native integration with Mailreach, Lemwarm and other warmup tools.
Distribute volume across inboxes automatically with per-sender caps.
AI categorizes positive, OOO, referral and negative — route each to the right place.
Everything you need built in
Connect any number of inboxes securely, no app passwords.
Track SPF, DKIM, DMARC and blacklist status per domain.
Even-out volume across senders automatically with per-sender caps.
Hard bounces are auto-suppressed across the entire workspace.
RFC-compliant unsubscribe header and footer baked in.
Tags replies by intent so reps only see what actually matters.
Know the health of every inbox and domain
Live SPF / DKIM / DMARC checks, per-inbox reputation, warmup status and bounce rate — before your reply rate drops.
- Per-domain blacklist + reputation monitoring
- Auto-pause a sender if bounces spike
- Send caps that ramp gradually per new inbox
Numbers from live campaigns
Measured across 40,000+ live campaigns on NxtSend.
Pre-send verification catches most invalid addresses.
vs. running a single inbox with the same reply rate.
Who this is for
Connects to the rest of your stack
Native CRMs, email, enrichment and automation.
Run safe LinkedIn connection requests, follow-ups and inbox automations.
Send cold email sequences from your Gmail with warmup-friendly limits.
Connect Microsoft 365 inboxes for outbound and reply tracking.
Two-way sync of contacts, companies and deals with HubSpot.
Push qualified replies and opportunities into Salesforce.
Create Pipedrive deals from positive replies automatically.
Send leads into GHL pipelines, triggers and workflows.
Sync prospects and replies with your Zoho CRM workspace.
Only pay for the inboxes you actually use
Growth includes 5 inboxes, Scale includes 15, Agency is unlimited. Add more anytime.
Frequently asked questions
Land in the inbox, not the spam folder
Connect Gmail or Outlook in 30 seconds and ship your first campaign today.