Is it safe to use with production data?

Use it with test data whenever you can. MailBench never delivers messages onward, and captured messages are deleted when your plan's retention period ends.

Do emails ever get delivered?

No. Every message stops in your MailBench inbox. There is no setting that forwards mail to real recipients.

Can I switch from another email sandbox?

Yes. Replace your SMTP host, port, username, and password. Nothing else in your app changes.

What happens when I reach my monthly quota?

Once you reach your monthly quota, the SMTP server rejects new messages until your quota resets or you upgrade. Messages already captured stay available until their retention period ends.

How long are messages kept?

Captured messages are kept for 7 days on Free, 30 days on Pro and 90 days on Team, then deleted automatically.

Fact sheet · Email & notification APIs

MailBench

A hosted testing SMTP inbox that captures emails without delivering them

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Overview

Screenshot of the MailBench homepage — What mailbench.dev looks like

MailBench provides a hosted SMTP inbox for developers and QA teams to test emails during staging and CI without delivering messages to real customers. Users connect their application to MailBench's SMTP server and every message is captured in a private inbox for inspection. The service includes an HTML, link and spam check viewer, a REST API with a wait-for-email endpoint for automated testing, webhooks for notifications, and an MCP server for AI coding agents. Teams can be invited to share inboxes with role-based access control.

Feature facts

Capture-only SMTP server on ports 587, 465 and 2525
HTML, text, raw source, and full headers inspection
REST API with wait-for-email endpoint for CI
MCP server for AI coding agents (Claude, Cursor)
Webhooks for notifications
Team roles and email invites
Chaos testing for SMTP failure scenarios
Separate inboxes per project with unique SMTP credentials
Desktop, tablet and mobile preview widths

Pricing

Pricing model: Freemium

Free: 2,500 emails/month, 7-day retention, 5 team members, 1,000 API requests/day, 1 webhook. Pro: $15/month (or $144/year, $12/month billed yearly), 50,000 emails/month, 30-day retention, 15 team members, 30 requests/second, 10 webhooks. Team: $49/month (or $468/year, $39/month billed yearly), 250,

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MailBench specifications

Specifications of MailBench
Section	Email & notification APIs
Origin	Dhaka, Bangladesh
Website	mailbench.dev
Votes²	0

MailBench metrics

Fact file for mailbench.dev: Ahrefs Domain Rating and Majestic link facts, each with the change since the last fact check.
Metric	Value
Domain Rating	3 +3 (up) since last check
Trust Flow	0 no change since last check
Citation Flow	0 no change since last check
Referring domains	0 no change since last check
External backlinks	0 no change since last check

Fact: Ahrefs Domain Rating checked 12 Nov 2026, fact changed 7 Nov 2026. Fact: Majestic checked 3 Nov 2026, fact changed 3 Nov 2026. Link facts from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

MailBench domain fact sheet

Open the fact sheet

Read from the public RDAP record on 11 Nov 2026, 12:34 UTC.
Domain age	1 month
Registered	12 Oct 2026
Expires	12 Oct 2027
Registrar	CloudFlare, Inc.
DNSSEC	Not signed

Every domain fact for mailbench.dev

MailBench launch receipt sheet

What we have measured for MailBench since it went live on SaaS Directory Info on 3 November 2026.

3 Domain Rating (Ahrefs) +3 (up) since launch
at launch: 0 (3 Nov 2026); latest: 11 Nov 2026
0 Trust Flow (Majestic)
first measured 3 Nov 2026
0 Referring domains (Majestic)
first measured 3 Nov 2026

Day 8 since launch. Next receipt: day 30, 3 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.

Biggest gains on SaaS Directory Info

Got a launch coming up?

Step-by-step tips for before, during and after your launch, free to read on SaaS Directory Info.

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Read the launch playbook

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Frequently looked up

Q1Is it safe to use with production data?: Use it with test data whenever you can. MailBench never delivers messages onward, and captured messages are deleted when your plan's retention period ends.
Q2Do emails ever get delivered?: No. Every message stops in your MailBench inbox. There is no setting that forwards mail to real recipients.
Q3Can I switch from another email sandbox?: Yes. Replace your SMTP host, port, username, and password. Nothing else in your app changes.
Q4What happens when I reach my monthly quota?: Once you reach your monthly quota, the SMTP server rejects new messages until your quota resets or you upgrade. Messages already captured stay available until their retention period ends.
Q5How long are messages kept?: Captured messages are kept for 7 days on Free, 30 days on Pro and 90 days on Team, then deleted automatically.

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Reviews and facts · Fact updates · Share these facts · Your SaaS? Claim this fact file · Report a wrong fact

Product	Origin	DR¹	Votes²
TempMail.nowFree temporary email address without sign-up	not stated	63	0 votes. Log in to vote for TempMail.now in the file
FutureMailEmail hosting for your own domain, built for people and their AI agents	United States	0	0 votes. Log in to vote for FutureMail in the file
5MinutesAPIWhatsApp API for OTP, alerts and bulk messaging ready in 5 minutes	Pakistan	0	0 votes. Log in to vote for 5MinutesAPI in the file
DMARCguardDMARC monitoring and enforcement platform across 9 email authentication protocols	Estonia	28	0 votes. Log in to vote for DMARCguard in the file