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DKIM Verifier Featured

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (57)
28,984 users

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MailHops

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Rated 4 out of 5 stars (41)
2,637 users

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ThunderSec Requires Restart

ThunderSec is a security extension that provides several pieces of additional security functionality, including DNS-based Blackhole List (DNSBL), Realtime Blackhole Lists (RBL), DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF).

Rated 4 out of 5 stars (7)
0 users

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DMARC Report Analyzer

Analyze DMARC aggregate and forensic reports locally within Thunderbird. Visualize authentication results per domain, classify source IPs, detect threats, track DKIM/SPF/envelope alignment, and export data. Fully offline with zero network requests.

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6 users

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DMARC Report Viewer

Detects DMARC aggregate report attachments and displays a parsed, human-readable report inline at the top of the message body.

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14 users

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Mail Auth Info Viewer

Visualizes email authentication (SPF, DKIM, DMARC), sender identity alignment, link analysis, and delivery routes. Designed for mail administrators and security-conscious users to verify proper authentication configuration. All processing is local.

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8 users

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