SMTP.com
Managed relay and a v4 sending API with account/sender configuration. Track delivery through the service's reporting resources rather than treating acceptance as success.
Start with the first guide, then choose a sending, receiving, or feedback task. Each walkthrough identifies permissions, operational checks, and the boundary between the service and MailKite. Refer to the official SMTP.com documentation for current platform requirements.
Explore the guides
Prepare an SMTP.com sender and v4 API credential
Configure the correct SMTP.com sending context and secure API authentication without placing secrets in URLs.
Submit a controlled message through SMTP.com v4
Use the current v4 sending model and inspect the JSend application result before treating an HTTP exchange as successful submission.
Reconcile SMTP.com delivery reports with application sends
Use sender-scoped reporting to track bounces and delivery evidence without polling blindly or confusing outbound feedback with incoming mail.