Mail-Tester

Mail-Tester gives senders a generated address, analyzes the received message, and returns a spam score with authentication and content diagnostics. It is not a full monitoring suite, but it is one of the simplest ways to catch obvious DNS, SpamAssassin, and content issues before a campaign sends.

Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.

Against behavior-triggered journeys, broadcasts, and winback campaigns measured on revenue, Mail-Tester covers none of the capabilities this audience leans on (scheduling, event stream, the suppressions API, and multi-tenant support), so it fits only where those needs are genuinely absent.

• Scheduling: No
• Event stream: No
• Deliverability: Not a sender. Scores one message at a time and helps identify obvious authentication, blacklist, and SpamAssassin issues.
• Operating since: Not published
• Suppressions API: No
• Best published rate per 1,000: Tiers not published in comparable form
• Multi-tenant: No
• Free tier: 3 tests free within the last 24 hours via the web interface
• Starts at: $50 for 500 tests, or larger prepaid test packs

Not a sender. Scores one message at a time and helps identify obvious authentication, blacklist, and SpamAssassin issues.

Developers and marketers who need a quick preflight check for a specific message.

Teams that need continuous DMARC monitoring or inbox placement reporting.