Don't burn your new domains on day one. Sending too many emails from a fresh mailbox triggers spam filters and ruins your reputation. Use the 360 AIRO Email Warmup Calculator to generate a safe, day-by-day warmup schedule that builds trust with inbox providers.
Guidance
Sending a large volume of emails from a brand-new domain or mailbox looks highly suspicious to email providers like Google and Microsoft. Email warmup simulates normal human sending behavior to slowly build trust and establish a positive sender reputation over time.
Guidance
Email warmup involves slowly increasing the number of emails sent from an account each day. These emails are sent to a network of real inboxes that automatically open, reply, and mark the emails as 'Not Spam', showing inbox providers that your emails are wanted.
Guidance
Follow these rules to ensure your mailboxes are properly warmed up before launching campaigns:
Guidance
This tool helps teams plan their warmup timeline to ensure mailboxes are ready for outreach without rushing the process and risking their domains.
FAQ
An email warmup calculator generates a day-by-day sending schedule to safely increase email volume from a new domain or mailbox.
A proper email warmup process takes a minimum of 14 to 21 days before you should send any cold outreach.
No. You should keep warmup running continuously in the background, even while sending active campaigns, to maintain a high sender reputation.
New domains should start by sending just 1 to 2 emails per day to establish initial trust.
Yes. The 360 AIRO Email Warmup Calculator is completely free to use.
Next step
Your Competitors Are Building Sender Reputation While You're Going to Spam. Generate your custom warmup schedule and protect your domains today.
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