An inbox provider decides whether to trust a sender before anyone reads a word. That judgment rests on five things, and we check every one: the authentication records on your domain (SPF, DKIM and DMARC), the reputation of your sending address, the quality of your list, the engagement it shows and the content itself.
Authentication now comes first. Large mailbox providers require it from bulk senders, so a missing record costs delivery before the design ever matters. The fix lives in a few lines of your domain settings, and it protects every campaign that follows.








