IN THE FIELD GUIDE

mailhist

mailhist.com

Mailhist is a tool for capturing SMTP traffic, inspecting email headers, and debugging HTML emails in a safe environment to prevent accidental emails to real users. It provides a fully compliant SMTP server, REST API for automation, HTML analysis, team collaboration, spam score analysis, and device preview features.

THE PRODUCT, BEYOND THE PITCH

Automatically researched · Not editorially reviewed · Sources checked Sep 14, 2026

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A good fit for

Modern developers needing email testing and debugging tools.

Know the limitations

Not confirmed yet.

What you can do

Testing emails in development to avoid sending accidental emails to real users.
Debugging and analyzing emails safely in an isolated environment.

Features

Fully compliant SMTP server that captures all outgoing emails.
REST API to automate testing by fetching messages, verifying content, and clearing inboxes programmatically.
HTML analysis to inspect raw HTML source, headers, and attachments, with upcoming spam score checks.
Team collaboration by inviting members to view captured emails and sharing messages via public links.
Spam score analysis to predict deliverability issues based on email content, headers, and IP reputation.

Integrations

Not confirmed yet.

Platforms & data export

Web application accessible at app.mailhist.com/inbox.

THE COST FOR YOUR TEAM

Go beyond the starting price.

Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.

PeopleBillingCurrencyPrices are shown as published. No exchange rates are applied.Monthly usage per toolApplies to each tool’s own unit. Leave at 0 for subscription cost only.

Known monthly subtotal

$0.00/month

1 of 1 tools could not be priced with these inputs, so this is not the full cost.

Plan costs based on your requirements
Tool / plan	Monthly	Per year	What this assumes
mailhist	No pricing recorded yet. Check the official site, or ask the owner to add it.

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What changed

1 recorded change · latest 9/14/2026

Changes to the facts recorded here, not a live scan of every vendor update. Save this tool to follow updates in your account.

9/14/2026
Updated: best for, features, limitations, platforms, use cases
See recorded changes
bestFor
Before: ["Modern developers needing safe email testing and debugging","Teams requiring collaboration on email debugging"]
After: ["Modern developers needing email testing and debugging tools."]
features
Before: ["Fully compliant SMTP server that captures all outgoing emails","REST API to automate testing by fetching messages, verifying content, and clearing inboxes programmatically","HTML analysis including raw HTML source, headers, attachments, and upcoming spam score checks","Team collaboration with ability to invite members and share specific messages via public links","Spam score analysis to predict deliverability issues before production"]
After: ["Fully compliant SMTP server that captures all outgoing emails.","REST API to automate testing by fetching messages, verifying content, and clearing inboxes programmatically.","HTML analysis to inspect raw HTML source, headers, and attachments, with upcoming spam score checks.","Team collaboration by inviting members to view captured emails and sharing messages via public links.","Spam score analysis to predict deliverability issues based on email content, headers, and IP reputation."]
limitations
Before: ["Spam score analysis feature is coming soon and not yet available","Free plan limits include 1 user, 1 team, 1 inbox, and 100 emails history"]
After: []
platforms
Before: []
After: ["Web application accessible at app.mailhist.com/inbox."]
useCases
Before: ["Testing emails safely during development without sending to real users","Automating email testing workflows using REST API"]
After: ["Testing emails in development to avoid sending accidental emails to real users.","Debugging and analyzing emails safely in an isolated environment."]