Multi-inbox sending at scale
Run outreach across unlimited connected inboxes with smart rotation, parallel sending, and human-paced delivery patterns that protect account health and maximize inbox placement.
Now in private beta · v1.0· AI assist included
Your outreach, at a million contact scale. No cold calls. No bloated pricing.
For sales teams, agencies, and growth operators who need Instantly-level sending power without the Instantly price tag. Bring your own SMTP, run personalized cold email sequences to millions of prospects, and own your pipeline from day one.
- No credit card
- 10k free cold emails / month
- Cancel anytime
- SOC 2 ready
2.4B+
Cold emails sent
1.2s
Avg. delivery speed
12,400
Digital marketing teams
42%
Avg. cold email open rate
app.mailhaulerpro.com / campaigns / new
New cold email campaign
Spring Collection Launch
Send · 48,290
To · Segment: Engaged subscribers (48,290)
Subject · A quiet thing we made this spring ✿
Hello, friend.
Something soft, something warm. Our spring drop is live — a small collection we've been quietly shaping for months.
Explore the collection →
Cold email open rate
64.2%
Click rate
18.9%
Delivered
99.8%
Quietly powering cold email outreach for sales teams & agencies worldwide
Platform capabilities
Everything you need for cold outreach that actually converts.
Mail Hauler Pro combines multi-inbox cold email sending, automated warmup, lead management, and deliverability infrastructure — built specifically for teams running outbound at scale.
Automated warmup & deliverability
Inbox vs. spam detection, bounce monitoring, real-time account health scoring, and auto-warmup — so your emails land where they belong from day one.
Lead management built to scale
Import from CSV, API, or Google Sheets. Prospects are automatically distributed across inboxes and account groups with flexible per-account sending controls.
Personalization & smart sequences
Dynamic variables, spintax, multi-step sequences, and thread-based follow-ups. Every cold email feels written by hand — even when you're sending millions.
Unified inbox for all accounts
Replies from every connected inbox in one place. Threaded conversations, IMAP sync, and direct response from a single centralized workspace.
Deliverability analytics that matter
Opens, replies, bounce rates, inbox placement, account health, and campaign performance — in clean dashboards built for outbound teams, not marketers.
Infrastructure engineered for outbound
Dedicated IP pools, DKIM/SPF setup, sending throttling, automatic failover, and suppression systems built for reliable large-scale cold email operations.
Automatic account health protection
Bounce spikes, spam placement, and sending limit violations are caught early — with dynamic throttling and auto-pause systems that keep your accounts safe.
Multi-layer email verification
Validate every lead before sending with a multi-layer verification engine that reduces bounces, protects domain reputation, and lifts inbox placement rates.
Automated FMCSA lead generation
Scrape FMCSA carrier data, extract verified business contacts, enrich lead info, and push clean prospects directly into active outreach campaigns — no manual work.
Ready to run cold outreach at scale?
Explore pricing, start free, or learn how the platform works end to end.
Pricing
One plan. Everything included. No surprises.
Full platform access from day one — no feature gating, no add-ons, no hidden fees. First 100 customers get 20% off for 6 months.
Early bird — 20% off for 6 months
Mail Hauler Pro
$44.99$35.99/ month
Then $44.99/mo after 6 months · Cancel anytime
Full platform access for sales teams, agencies, and outbound operators running cold email at scale.
What's included
- Unlimited connected inboxes
- Smart inbox rotation & parallel sending
- Automated warmup & deliverability monitoring
- Import leads from CSV, API, or Google Sheets
- Dynamic variables, spintax & multi-step sequences
- Unified inbox for all connected accounts
- Opens, replies, bounce & inbox placement analytics
- Dedicated IP pools, DKIM/SPF, auto-failover
- Automatic account health protection & auto-pause
- Multi-layer email verification engine
- Automated FMCSA lead generation
- Priority support
No credit card required · Cancel anytime
Why teams choose Mail Hauler Pro
Inbox placement, not just sending
Dedicated IP pools, automated warmup, and real-time health scoring keep your emails out of spam from the first send.
Built for outbound volume
Multi-inbox rotation, parallel sending, and human-paced delivery patterns let you scale without burning accounts.
Everything in one place
Lead import, verification, sequencing, unified inbox, and analytics — no stitching together five tools.
Ready to send cold email outreach that's beautiful?
Join 12,400+ digital marketing teams sending premium cold email campaigns with Mail Hauler Pro. Our email automation platform takes 60 seconds to get started — with 10,000 free cold reach emails per month, no credit card required.
Want to learn more first? Explore all cold email features or read about our email automation platform.