Send cold emails that get delivered, read, and replied to— at scale.
Trusted by the world’s best outbound teams
Infinite Firepower
Send unlimited emails from one command center
Send too many cold emails from one mailbox and spam filters punish you. To grow, teams had to hire armies of reps—each managing just their own mailbox.
Za-zu ends that. Connect as many mailboxes as you want. Send thousands of emails daily from one command center. No ceilings. No messy handoffs. No extra hires.
Unmatched Deliverability
Every best practice
handled for you
A brilliant cold email is worthless if it lands in spam. And most do—unless you're using Za-zu.
Za-zu warms your mailboxes, shuffles your message variations, and rotates senders the moment deliverability drops—so your emails land where they should, every time.
1:1 Messages At Scale
Write an effective email to every lead
It is not easy to send emails that strangers answer. It is, however, possible.
Za-zu fills in the blanks with AI—so every email feels personal, relevant, and worth replying to.
Add conditional logic like "if they just raised, mention the round" to say the right thing to the right person, every time.
“Za-zu is the platform that finally gets outbound right.”
Eric Engoron, Clay
“Landing in the Primary inbox has always been my #1 concern. Most platforms ignore deliverability. Za-zu treats it like a first-class feature. It just works.”
Matt Farah, Aurora
Reply instantly from one place
Za-zu pulls in every reply from every mailbox, tags the intent, and helps you focus on the ones that turn into revenue.
Powerful Analytics
Learn from every send with always-on, actionable analytics.
Performance
| Step | Sent | Opens | Replies | Positive Replies | Clicks | Bounce Rate |
|---|---|---|---|---|---|---|
Intial Email | 4,349 | 3,563 | 647 | +11.2% | +7.8% | +1.9% |
First Follow-Up | 2,943 | 2,148 | 234 | +3.1% | +5.6% | +2.9% |
Second Follow-Up | 1,443 | 789 | 118 | -5.1% | -6.3% | -9.9% |
Launch your first campaign for free
No credit card required. We'll make sure your messages get heard.
Not sure where to start? Join our cold email office hours.