Suppression lists ensure you never email someone who has unsubscribed, hard bounced, or marked your email as spam.

Spam complaints made about emails sent through your account can affect deliverability for everyone, and may even result in account closure.

Understand the difference between spam and opt-in email marketing.

Many deliverability cases revolving around emails not arriving are caused by a lack of email authentication. Low open rates and bounces can also be caused by not authenticating your sending domain.

Here are some common issues people have when setting up authentication.

Set up a custom domain name for yourself and clients for login and deliverability benefits.

Email authentication plays a crucial role in deliverability, reducing bounces, and avoiding spam filters. Learn about DKIM, SPF, and DMARC.

Solve delivery issues by looking at your bounce reasons, for example mail block - general versus spam detected. Some bounces may be caused by a temporary blocklisting.

You can use your own domain to rebrand your account and emails, log into Campaign Monitor, and authenticate your emails.

If you manage more than one account, you can use the same domain to authenticate both.