Maximize your outreach deliverability and keep your emails out of the spam folder.
Flat $29/mo for 1 to 10 email addresses in warmup · Cancel anytime
Sending cold outreach or high-volume business emails from a new or unconditioned email account triggers spam filters. Email warmup gradually simulates human engagement to establish a high sender score with major providers like Gmail and Microsoft.
Instant Email Warmup Program
$29/mo · up to 10 emails
Secure checkout · 256-bit SSL encryption · Cancel anytime
Email warmup is the process of gradually building a positive sender reputation for a new or inactive email address. When you send cold outreach or high-volume business emails from a brand-new inbox, email providers like Gmail, Outlook, and Yahoo see it as suspicious behavior and route your messages to the spam folder — even if your content is perfectly legitimate.
The 1stContact.ai Instant Email Warmup Program solves this by using an automated peer-to-peer network of real mailboxes. Your sender addresses exchange emails with other trusted accounts in the pool — opening, reading, replying, marking as important, and pulling messages out of spam. This simulates genuine human engagement, signaling to email providers that your address is legitimate and trustworthy. Over time, your sender score improves and your emails land in the primary inbox instead of spam.
The program covers up to 10 email addresses for a flat $29 per month — making it the most cost-effective way to protect your domain reputation and ensure your outreach reaches its intended recipients. The custom warmup ramp gradually increases daily email volume to avoid triggering security flags, and the entire process runs automatically in the background after a one-time setup.
Email warmup is essential for sales teams, agencies, and any business that relies on cold email outreach. Without it, even the best-crafted campaigns will fail — because your emails never reach the inbox. With 1stContact.ai's warmup program, you can send with confidence knowing your sender reputation is protected.
Email warmup is the process of gradually building a positive sender reputation for a new or inactive email address. It is important because email providers like Gmail and Outlook flag new accounts that send high volumes as suspicious, routing them to spam. Warmup simulates genuine engagement to build trust and ensure your emails reach the inbox.
The 1stContact.ai Instant Email Warmup Program covers up to 10 distinct sender email addresses for a flat $29 per month. Each address is warmed up independently within the peer-to-peer network.
Email warmup typically takes 2-4 weeks to build a solid sender reputation. The custom warmup ramp gradually increases daily email volume to avoid triggering security flags. Most users see improved deliverability within the first 7-10 days.
Yes. Email warmup is essential for cold outreach because it establishes your sender reputation before you start sending. Without warmup, cold emails from a new domain are almost guaranteed to land in spam. With warmup, your sender score improves and your outreach reaches the primary inbox.
Yes. The email warmup program is a month-to-month subscription with no long-term commitment. You can cancel anytime. However, we recommend keeping warmup active for any sender address you use regularly to maintain your sender reputation.