Guides
Straight answers to the questions people ask about email verification, bounces and keeping a list clean. Each guide starts with the short answer.
What is a catch-all email address?
A catch-all domain accepts email for every address at that domain, whether or not the mailbox exists, instead of rejecting unknown addresses. Because the server says yes to everything, no verifier can confirm one specific address with certainty, so catch-all addresses are reported as risky rather than valid.
6 min readReadHow to reduce your email bounce rate
To reduce your email bounce rate, verify your list before every campaign, remove hard bounces immediately and never send to them again, use double opt-in on signup forms, re-verify contacts older than about three months, and authenticate your domain with SPF, DKIM and DMARC. Aim to keep bounces under 2%.
7 min readReadHard bounce vs soft bounce: what is the difference?
A hard bounce is a permanent delivery failure: the address does not exist or the domain cannot receive mail, so remove it immediately. A soft bounce is temporary, such as a full mailbox, a busy server or a message that is too large, and the email may be delivered on a later attempt.
5 min readRead