Email Forwarding's Identity Crisis: The Reply Problem Nobody Solves

Email forwarding services like Cloudflare excel at receiving messages to custom domains but create a critical vulnerability when replying—your email client loses track of which address a customer originally wrote to, forcing manual sender selection or risking professional credibility damage. This gap forces small businesses and solo operators into expensive workarounds: either purchasing multiple mailbox seats or manually juggling complex 'Send As' aliases across numerous addresses. Understanding SMTP envelope rewriting is essential to preserve routing context throughout the entire email lifecycle.