Scale Outbound Safely Zero Primary Domain Risk
Isolate your primary corporate email domain. SendroAI provisions and rotates cold outreach across authenticated secondary mailbox clusters with real-time bounce suppression and warm-up monitoring.
High-volume outbound burns corporate email domains.
Sending cold outreach directly from your primary company domain is corporate suicide. A single spam spike destroys Google Workspace inbox placement for your entire company.
The Result
Catastrophic loss of corporate email deliverability, halted sales cycles, and emergency IT interventions.
Burned primary domain
Invoices, customer support, and internal memos start landing in customer spam folders.
Complex manual setup
Configuring SPF, DKIM, DMARC, and custom tracking domains across dozens of mailboxes takes days of technical work.
Deliverability blind spots
Most teams have zero real-time warning before their domain hits a global blocklist like Spamhaus or Barracuda.
Automated mailbox clusters, smart load balancing.
SendroAI provisions isolated secondary domains, validates DNS records, and intelligently balances sending volume across mailbox clusters.
Automated Secondary Provisioning — via One-Click DNS Setup
100% domain isolation with verified authentication. SendroAI automatically registers lookalike domains and injects verified SPF, DKIM, DMARC, and MX records automatically.
Peer-to-Peer Warmup Network — via Autonomous Inbox Engagement
Established domain reputation prior to campaign launch. Secondary mailboxes interact within a closed network of real business inboxes, building high sender scores before sending a single prospect email.
Dynamic Volume Balancing — via Deliverability Guardrails
Zero spam trigger spikes across Google and Microsoft inboxes. Sending volume is capped at safe thresholds per mailbox and automatically redistributed if any address shows early deliverability friction.
Paced sending cadences engineered for inbox placement.
Clean, plain-text email with zero tracking pixels or risky attachments to establish initial placement.
Short, contextual message referencing the initial note without repeated links or images.
Brief conversational inquiry designed to encourage low-friction prospect replies.
Permission-based closing message maintaining sender domain hygiene.
Auto-Pause: Instantly halts sequence the moment any prospect sends a reply or books via calendar.
Centralized inbox routing across dozens of secondary domains.
Never log in to multiple inboxes again. SendroAI routes every inbound response from every secondary mailbox into a unified team inbox with automatic spam and bounce filtering.
Enterprise-grade infrastructure built for deliverability perfection.
Automatically acquires and configures verified secondary domains.
Sets up SPF, DKIM, DMARC, and custom tracking domains without IT tickets.
Validates recipient email addresses before dispatch to keep bounce rates under 2%.
Distributes outbound volume smoothly across dozens of secondary accounts.
Continuous monitoring of IP reputation, blacklist status, and inbox placement rates.
Consolidates all secondary domain communications into a single interface.
Domain protection economics for revenue teams.
Run this calculation on your target list.
Target Accounts
5,000 Monthly Outreach Emails
Average Deal Size
25 Secondary Mailboxes
Account Meeting Rate
98.4% Primary Inbox Placement
Forecastable Pipeline
$0 Primary Domain Risk
Calculate the deliverability advantage of secondary mailbox rotation: Protect your company's core asset while executing outbound at scale with institutional peace of mind.
Built by people who understand the cost of burning a great account.
Built by deliverability engineers and systems architects who managed email infrastructure sending over 50 million messages. We engineered SendroAI to replace brittle DIY spreadsheet setups with resilient, automated infrastructure.
Turn your target account list into active sales cycles.
Safeguard your corporate reputation while scaling outbound pipeline. Built for RevOps leaders, growth marketers, and sales operations professionals who refuse to gamble their company domain.
Frequently Asked Questions
Why shouldn't we send cold email from our primary domain?
Even gentle cold email generates occasional spam reports. If your primary domain reputation drops, all corporate emails—including investor updates and customer invoices—will land in spam.
What is a secondary lookalike domain?
A secondary domain is an alternative domain that closely resembles your brand (e.g. `trysendro.com` or `getsendro.com`) used solely for outbound sales to protect your primary domain.
How does SendroAI handle warm-up?
SendroAI gradually scales sending volume over a 2-to-3 week period while simulating natural two-way conversations with other authenticated business accounts.
How many secondary inboxes can we connect?
SendroAI supports unlimited secondary inboxes, allowing your team to scale sending volume safely by adding mailboxes rather than overworking individual accounts.
Ready to Transform Your Outbound Motion?
Join high-growth revenue teams booking qualified meetings with SendroAI's autonomous infrastructure.