Inbox Warmup
Land in the inbox, not spam. Muzero's warmup engine sends and receives realistic emails from a trusted network to build your domain reputation before you start cold outreach.
Inbox Warmup
Email Automation
2-3 wks
Full warmup
98%
Inbox placement
Daily
Score updates
Why teams use this
Land in the inbox
Build genuine sender reputation so your outreach emails avoid spam folders.
Gradual ramp
Starts slow and scales naturally — mimicking real email behavior.
Invisible to you
Warmup emails are auto-labeled and hidden. Your inbox stays clean.
What's included
Set up in 3 steps
Get started in minutes — no engineering required.
Connect your inbox
Add your Gmail or Outlook account to Muzero.
Start warmup
Enable warmup — we begin with 5 emails/day and ramp up gradually.
Monitor reputation
Watch your inbox placement score improve on the dashboard.
Who it's built for
New domains
Build reputation from scratch before launching campaigns
Recovery
Recover inboxes from spam complaints or blacklisting
Scaling teams
Warm up multiple sending accounts in parallel
Common questions
Everything you need to know about Inbox Warmup.
Related automations
Build your pipeline.
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