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All Automations
EmailIncluded in Pro

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.

Start using this — freeBrowse all automations
Works withGmailOutlook

Inbox Warmup

Email Automation

2-3 wks

Full warmup

98%

Inbox placement

Daily

Score updates

Included in Pro plan

Why teams use this

1

Land in the inbox

Build genuine sender reputation so your outreach emails avoid spam folders.

2

Gradual ramp

Starts slow and scales naturally — mimicking real email behavior.

3

Invisible to you

Warmup emails are auto-labeled and hidden. Your inbox stays clean.

What's included

Automated send/receive with real inboxes in our warmup network
Gradual ramp — starts slow, scales to full volume
Auto-move warmup replies out of spam
Reputation score dashboard with daily updates
Custom warmup schedules per inbox

Set up in 3 steps

Get started in minutes — no engineering required.

1

Connect your inbox

Add your Gmail or Outlook account to Muzero.

2

Start warmup

Enable warmup — we begin with 5 emails/day and ramp up gradually.

3

Monitor reputation

Watch your inbox placement score improve on the dashboard.

Get started now

Who it's built for

1

New domains

Build reputation from scratch before launching campaigns

2

Recovery

Recover inboxes from spam complaints or blacklisting

3

Scaling teams

Warm up multiple sending accounts in parallel

Common questions

Everything you need to know about Inbox Warmup.

Most inboxes reach full reputation in 2–3 weeks depending on starting point.

Related automations

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Inbox Sync

Sync inbound emails to detect replies, bounces, and new leads in real time.

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Delivery Monitoring

Track email delivery status, bounces, and spam complaints in real time.

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Email Open Tracking

Track when leads open your emails with pixel-level accuracy.

Learn more
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