Mailyser logo

Mailyser

Vendor: Mailyser

Email deliverability platform offering pre-send inbox placement testing, AI content analysis, DMARC handling, and reputation monitoring across domains and IPs.

Visit Website ↗
email linkedin Email marketers and deliverability specialists testing campaign placement before send #email-deliverability #inbox-placement #dmarc #spam-score

Overview

Mailyser is an email deliverability platform built for email marketers and deliverability specialists who need to know whether a campaign will reach the inbox before it is sent. The product runs pre-flight tests against monitored seed accounts to predict whether an email will land in the inbox, in junk, or not at all, then reports on spam score, authentication, blocklists, spam traps, email structure, and broken links. Alongside testing, its Vitals dashboard consolidates reputation monitoring for every sending domain and IP address, drawing on Google Postmaster, Microsoft SNDS, and DMARC reporting. AI-powered actions turn each finding into a specific fix and generate content recommendations aimed at improving both placement and engagement. Brands listed as customers on the company's site include Coinbase, San Miguel, Estrella Galicia, and Pull & Bear.

Key Features

Pre-Flight Placement Testing

Sends test emails to monitored seed accounts to predict inbox, junk, or undelivered outcomes before a live campaign sends.

AI Spam Score

AI-generated score assessing data points that drive email placement and identifying factors pulling the result down.

Content and Structure Analysis

Checks emails for spam trigger language, image-to-text ratio, accessibility, and readability, with attached recommendations.

Link and Blocklist Checks

Verifies every URL as live and checks blocklists in real time, with guidance on resolving any listings.

Vitals Monitoring

Consolidates reputation data across all sending domains and IPs via Google Postmaster, Microsoft SNDS, and spam complaint data in one dashboard.

Mailyser DMARC

Sets up and monitors DMARC records, surfacing authentication failures and spoofing attempts.

Pros & Strengths

  • ✓
    Visibility Before Sending: Placement problems surface ahead of the campaign rather than after a poor send.
  • ✓
    Fixes, Not Just Diagnostics: Each issue is paired with an explanation of how to resolve it, suitable for teams without a dedicated deliverability specialist.
  • ✓
    Unlimited Seats: Paid plans are not priced per user, allowing a whole marketing team to access results.
  • ✓
    Consolidated Monitoring: Vitals brings Google Postmaster, Microsoft SNDS, DMARC reporting, and blocklist status into one view instead of several separate consoles.
  • ✓
    Free Entry Point: A free plan and a one-off free test let buyers see real output before paying.

Cons & Tradeoffs

  • ⚠
    Steep Jump to Paid: The free plan allows a single test on one domain, so sustained use requires the $450 per month Pro plan.
  • ⚠
    Tight Domain Allowances: Pro covers two domains and Enterprise five, with each additional domain charged at $150 per month.
  • ⚠
    Monitoring in Top Tier: The Vitals reputation and DMARC monitoring suite is listed only on the $12,000 per year Enterprise plan.
  • ⚠
    Not a Sending or Warm-Up Tool: Mailyser diagnoses and monitors deliverability but does not send campaigns or warm mailboxes, so it works alongside other tools rather than replacing them.

Known Limitations

  • • Free plan limited to a single test on one domain
  • • Additional domains incur monthly or annual fees
  • • Vitals monitoring and DMARC reporting available only on Enterprise plan
  • • Does not send campaigns or warm mailboxes; diagnostic tool only

Pricing & Plans

Model: freemium

Free plan offers one test on one domain. Pro plan is $450 per month for 50 tests across two domains with unlimited seats and GPT assistant. Enterprise plan is $12,000 per year for 1,000 tests across five domains with Vitals monitoring and a dedicated account manager. Add-ons available: additional domains $150 per month or $1,500 per year, additional tests $150 per five tests monthly or $1,500 per five tests annually, and additional IPs $1,500 per year.

✓ Free Plan ✓ Free Trial

Editorial Info

Last Reviewed: 2026-08-20

Verified Sources & Research

Similar Sales Tools

Abstract API

by Abstract API

Developer API suite for email, phone, and IP verification plus company enrichment to clean lists and block fraud.

subscription

AeroSend

by AeroSend

AeroSend optimizes cold email deliverability through inbox warm-up, domain authentication, and real-time monitoring, helping businesses improve inbox placement and reduce bounce rates.

subscription

Allegrow

by Allegrow

Allegrow is an email deliverability platform that monitors sender reputation, analyzes spam rates, and provides automated safety measures to improve inbox placement for sales and marketing teams.

freemium