Get an email with your website
When creating a newsletter, you will have a better chance of avoiding the spam filter with a custom @ email address. Do not use @Gmail, @Yahoo, @Ymail, etc. I have my email as firstname.lastname@example.org. Gmail and yahoo.com emails are considered personal and are more likely to be spam accounts because they are free to create. You can buy a custom mailbox and/or your hosting may provide you with one for free also.