Email deliverability refers to the ability of your emails to reach recipients' inboxes. It measures whether your emails are delivered successfully without landing in spam folders. A high deliverability rate ensures your messages reach your audience. Email open rates show the percentage of recipients who open your emails. It indicates how engaging your subject lines and content are. Both metrics are crucial for successful email marketing. You must maintain a clean email list to improve deliverability. You should write compelling subject lines to boost open rates. You must monitor these metrics to assess and improve your email campaign performance.