Email Warm-up

Email service providers like Google Workspace and Microsoft 365 treat brand-new sending addresses with suspicion. A newly created email that immediately sends hundreds of messages per day looks exactly like spam behavior, and providers will route those messages to spam or blacklist the domain entirely. Email warm-up solves this by mimicking the behavior of a normal user who gradually increases their email volume as they build relationships. The warm-up process typically works as follows: starting with 10–20 emails per day, a warm-up service sends messages between the new address and a network of other warm-up addresses. These emails are automatically opened, replied to, and moved out of spam — creating the positive engagement signals that tell email providers this is a legitimate, active account. Over 4–8 weeks, the daily sending volume is incrementally increased until the address can safely handle 100+ cold outreach emails per day. For teams using Outvid's video email outreach, warm-up is still necessary but the long-term reputation benefits are amplified. Because personalized video emails generate significantly higher open, click, and reply rates than standard text emails, the resulting engagement signals continuously reinforce sender reputation even after the warm-up period ends. Teams that combine proper warm-up with genuinely engaging video content build and maintain strong deliverability over the long term.