In simple English
Email servers send technical reports about who is sending mail on your behalf. These reports arrive as confusing XML and JSON files inside your email inbox. This tool logs into your email inbox, reads those reports, and turns them into clear charts. You run it on your own server using a small Docker container. It costs nothing to run, but you need to provide your own email server details.
What it is
A lightweight standalone DMARC and SMTP TLS report viewer with an embedded IMAP client and web interface. It runs as a single executable or a small Docker container and keeps all data in memory without using a database.
What it is good for
Solo builders who run their own email servers and want a simple way to check DMARC and TLS delivery reports without setting up a heavy dashboard or database.
- Runs easily inside a tiny 10 MB Docker container.
- Keeps all data in memory so it needs no database setup.
- Includes automatic HTTPS certificate generation via Let's Encrypt.
- Does not support OAuth, so it cannot connect to Microsoft 365 without an extra proxy.
- Stores no reports on disk, meaning all reports reload from the IMAP inbox on restart.
- Only connects to a single IMAP account at a time.
manual inspection of raw XML and JSON DMARC report emails
Postfix or another self-hosted mail server
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sudo docker run --rm \ -e IMAP_HOST=imap.mymailserver.com \ -e IMAP_USER=dmarc@mymailserver.com \ -e IMAP_PASSWORD=mysecurepassword \ -e HTTP_SERVER_USER=webui-user \ -e HTTP_SERVER_PASSWORD=webui-password \ -p 8080:8080 \ ghcr.io/cry-inc/dmarc-report-viewer