If you don’t have an email list for email marketing, how do you get an email list? Purchase an email list? Purchased email list won’t be working effectively because many of those emails are identified as spam by the email recipients.
It is very likely that an individual in the purchased email list is not related to your business at all. For this reason, email recipients on the purchased list are likely to distinguish their emails as spam.
If a campaign was identified as spam in a mail box before, the spam filter will flag the campaign when the campaign is in the mail box again.