Mailtrap: We Send Emails | Live Sending, Sandbox, Marketing

Email Platform for Builders

Mailtrap is one platform to send transactional and marketing emails, receive inbound email, and test in a sandbox before going live. Start with one email, scale to millions.

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brew install mailtrap/cli/mailtrap

3 Products One Platform

Use one product or all together.

Live Sending

Send transactional and bulk emails via API or SMTP, with logs and delivery analytics.

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Reputation monitoringAll healthy

Domain reputation Healthy

High

BadLowMediumHigh

Reported by Google Postmaster

Spam rate Healthy

0.08%

0.3% limit

Keep below 0.3% to protect delivery

By mailbox providerLast 30 days

Mailbox provider	Delivered	Opens	Clicks	Bounces	Spam

Open Google Postmaster

Sandbox

Capture and inspect emails from dev and staging environments.

Learn more View Plans

Sandbox name

Total messages sent: 0

Credentials

Hostsandbox.smtp.mailtrap.io

Port25, 465, 587 or 2525

Usernamea1b2c3d4e5f607

Password****97e8

AuthPLAIN, LOGIN and CRAM-MD5

TLSOptional (STARTTLS on all ports)

Code Samples

Learn more about SMTP

Sandbox Email Address

Check how it works

Send emails directly to sandbox from a CRM or email service without integration.

Enabledsandbox-name-a1b2c3@inbox.mailtrap.io

Credentials

Hostsandbox.api.mailtrap.io

EndpointPOST /api/send/{sandbox_id}

AuthorizationBearer <YOUR_API_TOKEN>

Learn more about API tokens and sending test emails

Code Samples

Learn more about Send email and Batch send

Credentials

Hostpop3.mailtrap.io

Port1100 or 9950

Usernamea1b2c3d4e5f607

Password****97e8

AuthUSER/PASS, PLAIN, LOGIN, APOP and CRAM-MD5

TLSOptional (STARTTLS on all ports)

Code Samples

We currently don’t have any code samples for POP3.

To learn more about what POP3 is, see The Ins and Outs of POP3 .

To learn more about how it compares to SMTP, see Decoding POP3 vs. SMTP .

93.8%Market support

Desktop (8)Mobile (6)Web (7)

Apple Mail97%

Gmail89%

Outlook90%

Yahoo! Mail88%

Other91%

<body> elementPartialNot supported

Gmail Android1Gmail Desktop Webmail2Gmail iOS1Gmail Mobile Webmail1Outlook AndroidOutlook iOSOutlook.com3Yahoo! Mail AndroidYahoo! Mail Desktop1Yahoo! Mail iOSAOL AndroidAOL Desktop Webmail2AOL iOSFastmail WebmailHEY Webmail3LaPoste.net WebmailMail.ru WebmailOrange Android1

Spam Report

-0.5

0score5

Everything is good, don’t worry

Points	Rule name	Description
-1.0	ALL_TRUSTED	Passed through trusted hosts only via SMTP
0.2	HEADER_FROM_DIFFERENT_DOMAINS	From and EnvelopeFrom 2nd level mail domains are different
0.3	HTML_IMAGE_ONLY_04	BODY: HTML: images with 0-400 bytes of words
0.0	HTML_MESSAGE	BODY: HTML included in message

Blacklists Report

Domain: acme.exampleIP: 203.0.113.24Summary: Not listed in blacklists

BACKSCATTERER:Not ListedBARRACUDA:Not ListedSpamrbl IMP-SPAM:Not ListedWormrbl IMP-SPAM:Not ListedLASHBACK:Not ListedNIXSPAM:Not ListedPSBL:Not ListedSORBS-SPAM:Not ListedSPAMCOP:Not ListedTRUNCATE:Not Listed

Marketing

Keep email campaigns simple and effective, with all the essentials to create, automate and send.

Learn more View Plans

Campaigns

7 campaigns

15 years in email

Recommended by developers and product teams

A product from a team that listens

Every time I’ve thought, “it would be great if it could do this,” Mailtrap already did. It’s exactly what we need to handle our critical B2B marketplace communications.

Raphael Esch CTO

A stable system for high-security teams

Mailtrap gives our marketing team the visibility it needs without compromising our high-security infrastructure. It was far easier to set up than complex cloud providers, and our devs are happy.

Todd Merrill CTO

Simple integration, useful features

Building simplistic things is the hardest, but Mailtrap is just simple. I just throw the documentation into Cursor and it works flawlessly. It stood out with a perfect bucket of features other services charged way more for.

Khalid Hasan Product manager

Built on trust

Security and
access control

GDPR
SOC 2
ISO 27001
DORA

Visit Trust Center

secure_access

SSO (SAML)

Single sign-on through the company’s identity provider.

activity_tracking

Audit Logs

See who changed what, and when, for full activity tracking.

team_access

User Management

Invite the team and manage access from one place.

access_control

Roles and Permissions

Decide who can view, send, or change settings.

Mailtrap support team member showing her laptop while the green Mailtrap mascot points at the screen

Real people behind the API

Email is technical.
Support is human.

Behind every send, there’s a person building something. And behind Mailtrap, there are people ready to help.

Right at home in any stack

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