Pre-warmed mailboxes are ready to use faster than standard new mailboxes, but they still require a proper ramp-up to maintain deliverability.
What Does Pre-Warmed Mean?
Pre-warmed mailboxes have already completed an initial warmup period before you receive them. This means they have established a sending reputation and are ready to start sending cold emails sooner.
Pre-warmed Google mailboxes are available at $5/mailbox/month.
Recommended Sending Ramp-Up Schedule
Even though mailboxes are pre-warmed, you should still ramp up your sending volume gradually:
Week 1: 30–50 cold emails per mailbox per day
Weeks 2–3: Increase to 50–70 emails per day
Week 4 and beyond: Up to 100 emails per day if domain reputation remains strong
Jumping to maximum volume immediately — even with pre-warmed mailboxes — risks triggering spam filters.
Keep Warmup Running During Campaigns
Even after you start sending cold outreach campaigns, keep your warmup tool running at a low volume (10–20 emails per day per mailbox). This ongoing warmup activity helps maintain your sender reputation.
Exporting Pre-Warmed Mailboxes
Export pre-warmed mailboxes to your outreach tool the same way as standard mailboxes — using the direct integration method in the Icemail dashboard (Mailboxes → Export Mailboxes → choose platform).
Domain Forwarding on Pre-Warmed Domains
You can set up domain forwarding on pre-warmed domains just like any other Icemail domain. Go to Domains → click your domain → set up forwarding.
Adding Profile Pictures
Icemail can add profile pictures to your pre-warmed mailboxes, which improves deliverability and response rates. Contact team@icemail.ai to request profile picture setup.
Questions About Pre-Warmed Mailboxes?
Contact team@icemail.ai for pricing, availability, and setup assistance.