Feature
Inbox warmup
Earn inbox placement before you scale.
A built-in warmup pool trades realistic email with other warmed mailboxes across Gmail, Outlook, and SMTP, ramping your volume over 21 days so your domain earns inbox placement before real outreach scales. No separate warmup subscription.
Send cold at volume from a fresh domain and you'll land in spam — no matter how good the copy is. Warmup builds the reputation that gets you into the inbox in the first place, and My Haze Pro includes it rather than sending you to a second vendor.
The warmup pool exchanges realistic, human-looking email between warmed mailboxes and gradually increases your volume on a safe 21-day schedule. It works across Gmail, Outlook, and SMTP together, so your deliverability signals look natural before your real outreach ramps.
Highlights
21-day automated ramp
Volume increases gradually on a safe schedule for any connected mailbox.
Cross-provider pool
Warms Gmail, Outlook, and SMTP mailboxes together for realistic deliverability signals.
Included on every plan
Warmup is part of My Haze Pro — not a separate tool or bill.
How it works
Connect a mailbox
Add any Gmail, Outlook, or SMTP mailbox you plan to send from.
Warmup starts automatically
Your mailbox joins the pool and begins exchanging realistic email.
Volume ramps safely
Over 21 days your send volume increases on a schedule that protects reputation.
What's included
- 21-day automated warmup ramp
- Cross-provider pool (Gmail, Outlook, SMTP)
- Realistic human-like email exchange
- Included on every plan — no add-on
- Works alongside live outreach
Questions
Why do I need warmup?+
It builds the sender reputation that gets you into the inbox. Skip it and cold volume from a new domain tends to land in spam.
How long does it take?+
Volume ramps over about 21 days on a safe schedule, and warmup keeps running in the background as you scale.
Is it an extra cost?+
No — warmup is included on every plan, not a separate subscription.
Try Inbox warmup free for 14 days.
No credit card required.