Envoy ◆
Envoy is a visitor management and workplace platform with secure check-in, emergency response, and compliance.

Mailhardener (Cybersecurity): Secure your email with Mailhardener: manage SPF, DKIM, DMARC, MTA-STS, and improve deliverability. Pricing: from €19/mo. (data verified August 2026)
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Mailhardener is a domain email security platform that helps you implement and monitor email authentication standards—SPF, DKIM, DMARC, MTA-STS, and BIMI—to prevent fraud, spam, and impersonation. It also helps improve email deliverability by showing you security results and offering actionable insights.
Ideal for small to large businesses, IT administrators, and managed service providers (MSPs) that want to secure their email domains and ensure legitimate emails reach inboxes. It's also great for nonprofits and personal domains with low volume, thanks to its free plan. Not suited for individuals seeking a full-featured email client—Mailhardener focuses on domain-level security, not email hosting.
Control which third-party services (like marketing platforms or payment providers) can send email on your behalf by managing sender policies. Monitor DMARC reports to detect fraudulent activity, and use MTA-STS to enforce encrypted email transport. Improve deliverability by reducing the chance of your emails being flagged as spam.
Editorial score from our review methodology — not user ratings.
Mailhardener pricing: from €19/mo.
For comparison: the median starting price in Cybersecurity is $9.99/month, measured across 116 tools we track. See the full SaaS Pricing Index →
Free for personal or evaluation use. Single domain, up to 1 month data retention.
For small businesses. Includes up to 10 domains, 3 months data retention, multi-user access, SSO/2FA/IAM, DMARC aggregation, SMTP TLS aggregation, hosted MTA-STS, BIMI asset hosting, DNS monitoring, and technical support.
For larger organizations. Up to 100 domains, 1 year data retention, all Standard features, plus payment by invoice.
All Large features, no domain limit, no data retention limit, custom contracts, assisted onboarding, vendor assessment, private instance option, eIDAS, and regulatory compliance agreements (DORA, HIPAA BAA, etc.).
Free trial? A free plan is available for personal and evaluation use. See plans for commercial use.
Don’t take our word for it — ask your AI about Mailhardener