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SMTP configuration

SMTP is the universal way to send email into MailSandbox — it works with any language or framework. Point your application’s mailer at an inbox’s SMTP credentials and every message it sends is captured instead of delivered.

Connection settings

Section titled “Connection settings”

Open your inbox and click “Configuration” to find its exact values. The SMTP settings look like this:
Host smtp.mailsandbox.com
Port 2525
Username ms_… (your inbox username)
Password … (your inbox password)
Encryption null

Code samples

Section titled “Code samples”

The Configuration screen generates copy-paste config for your stack, with the inbox credentials already substituted.

MailSandbox inbox configuration showing SMTP code samples for many frameworks
Ready-made snippets for Laravel, Node.js, Python, Ruby, Symfony, Java, C#, CakePHP and cURL.

Laravel

Section titled “Laravel”

Add these lines to your .env file, using the credentials from your inbox:

MAIL_MAILER=smtp
MAIL_HOST=smtp.mailsandbox.com
MAIL_PORT=2525
MAIL_USERNAME=ms_your_inbox_username
MAIL_PASSWORD=your_inbox_password
MAIL_ENCRYPTION=null
MAIL_FROM_ADDRESS="hello@example.com"

Other stacks

Section titled “Other stacks”

Any SMTP-capable library works — Nodemailer, smtplib, PHPMailer, Symfony Mailer, JavaMail and more. Point them at the host and port above and authenticate with your inbox username and password. The inbox Configuration screen has a ready-made example for each.