video1.0<iframe src="https://www.loom.com/embed/952d66bed5bc4c6e80d99192d9e72e18" frameborder="0" width="1920" height="1440" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>14401920Loomhttps://www.loom.com14401920https://cdn.loom.com/sessions/thumbnails/952d66bed5bc4c6e80d99192d9e72e18-0bccc09e5c23f6e1.gif207.062In this video, I explain what a custom sending domain is and why it’s essential for your newsletters. I walk you through the setup process in Letterhead, highlighting that it must be a subdomain to protect your main domain's reputation. After entering your subdomain, you'll receive values like CNAME, DKIM, and DMARC to input into your DNS hosting provider. Once verified, you'll see the status update to confirm your sending domain is active. Please ensure to complete this setup and configure your Sender Name, Sender Email, and Reply Email accordingly.