Mailbox warm-up

Mailbox warm-up is the practice of starting a new sending address slowly: a handful of messages a day to people who will open and reply, then a few more each week, until the mailbox reaches the daily limit you intend to run at. Some teams do this by hand with real correspondence; others use warm-up services in which a network of mailboxes exchange and reply to each other’s messages automatically.

It matters because a mailbox with no history has no reputation, and providers treat sudden volume from an unknown address as a warning sign. A new domain and a new mailbox that begin on day one with a full cold-email campaign are the classic way to land in junk before anyone has read a word. Warm-up gives the provider a record of ordinary behaviour to compare against. Note that automated warm-up networks are viewed with growing suspicion by some providers, and warm-up does not repair a bad list, weak authentication or poor content.

Seegnals does not have built-in warm-up yet; it is planned through a partner and appears as coming soon. Until then, warm a new mailbox manually, set its daily limit low, and raise the limit in steps as the address builds a history.