Send a real message from your mail system to a one-time address and get the report receivers see: SPF, DKIM verified cryptographically, DMARC alignment, reverse DNS, TLS, and blacklists.
No signup. The address works once and the message is deleted after analysis.
Send an email to that address from the system you want to test. Watching the mailbox…
Every RemarkableCloud managed VPS sends through the MailChannels gateway: high-reputation IPs, SPF, DKIM and DMARC set up for you, working from day one.
You send a real message to a one-time address. We retrieve it, then grade what the stored message proves: SPF, the DKIM signature re-verified cryptographically, DMARC alignment, reverse DNS, TLS in transit, and blacklists on the sending IP.
The message is analyzed automatically and deleted after the report is generated. Use a test message, not sensitive content.
You submitted with SMTP authentication directly to the receiving server, so the message bypassed your real outbound path. Send from an externally hosted mailbox to grade what receivers actually see.
Free tools by RemarkableCloud, fully managed hosting since 2001. All tools