Most cold email advice is about subject lines and first sentences. Fair enough, except that none of it matters if the message never reaches the inbox.

Deliverability in cold outreach mostly comes down to how clean the list is, how the sending domain was prepared, and how many recipients hit "spam". Break any of them and the domain can get burned within a couple of campaigns.

uChecker collected the rules and risks of cold email outreach in one place: CAN-SPAM, GDPR, warm-up, bounce thresholds and spam traps.