If emails are not being received this usually indicates that they are being blocked by spam filters. The most common reason for this is not using a verified sending domain. To set up your sending domain please see this help topic: Creating a sending domain
For further spam avoidance advice please see: Avoiding spam filters and other email marketing tips
For campaigns and autoresponders check the bounce statistics to see if emails have bounced. The bounce messages often contain useful information about why the email bounced. For further help please see: My campaign has a high number of bounces and Understanding bounce types
If you are still not sure what is causing the issue then please open a support ticket for us to investigate, email us [email protected]
