As now pointed out, the expression “opt-in” refers back to the signup process. There are two different types of opt-in for email marketing: Mailgun is yet another platform intended for email marketing that gives you a real-time email validation API. Now you will be wondering, can’t I just send https://it-support01945.educationalimpactblog.com/49017501/5-simple-statements-about-mautic-explained