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Guides

Resources for Developers: API Docs and Code Examples

For developer references see the API documentation or the example code projects.

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Send and receive emails

Use inbound and outbound email in code, mail-clients, or online dashboard. Add attachments, configure webhooks and gain SMTP access.

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Introduction to MailSlurp

Install and configure MailSlurp using SDK libraries or REST API. Create phone numbers and email accounts and control them in code and tests.

Creating inboxes

Create email addresses and control mailboxes with MailSlurp's secure inbox functionality. Send and receive emails with ease. Learn how here!

Webhooks events for email and SMS

Receive emails with http webhooks. Webhooks let you respond to inbound email streams in real time on your server or within an application.

Wait for matching email content

How to wait for email messages in code that match search criteria. Pattern matching and regular expression examples.

Testing User Sign-Up and Email Confirmation is 7 characters longer.

A tutorial on testing email dependant actions using MailSlurp test email accounts. Intercept inbound emails in tests and extract confirmation codes.

Testing SMS based authentication (2FA/OTP)

How to test applications that use two-factor (2FA) authentication and one-time TXT/SMS message passwords and codes.

Team members share email accounts for collaboration and communication.

How to manage MailSlurp team access to an organization. Create custom company mailservers, email routing, and forwarding. Configure member permissions.

Sending emails in code and tests is a crucial aspect of software.

How to send emails in code and tests. Use MailSlurp email APIs in Javascript, Java, PHP, CSharp and more. Works with SMTP clients or REST SDKs.

Sending and Receiving Email Attachments

Master sending and receiving email attachments with SMTP emails. Learn how to upload, download, and attach files using MailSlurp.

Send emails in Laravel using Mailable or Notification (test with Dusk)

Configure Laravel PHP projects with MailSlurp mailservers to send and receive email in code and tests.

SMTP IMAP Mail Settings

How to access MailSlurp email accounts using IMAP and SMTP servers. Configure your mail clients or programming SDKs to use SMTP protocols.

Reduce Email Bounces with Email Verification

Deliver emails with confidence using MailSlurp's email verification API. Validate addresses in code or through the online dashboard for improved deliverability.

OTP one time password email testing is a necessary security measure.

How to test MFA 2FA short-codes and login magic links. Integration testing using throwaway email accounts. Dummy mailbox server to capture codes.

Inbox rules: permissions and routing (allow, block, filter)

Set inbox routing rules to block or allow inbound and outbound emails. Employ recipient patterns to filter mail.

How to configure Mail desktop clients with MailSlurp

How to Setup MailSlurp with Outlook, Gmail, Thunderbird, Mail App and More: A Guide to SMTP and IMAP Access for Your Email Addresses

Email tracking pixels

Email Open Tracking with MailSlurp: Send tracking pixels to see if emails are opened, and receive open events via webhook or dashboard view.

Email auto-forwarding rules

Configure Email Forwarding for Inbound Messages: MailSlurp allows you to create rules and forward incoming emails to specified addresses.

Email address custom domain setup - (step by step guide)

Custom email account domain setup. Attach your hosting to MailSlurp mailservers using DNS records. Add DKIM for identity.

CSharp send SMTP email with attachments.

How to use CSharp (C#) and .NET SMTP client to send email with MailSlurp mail server. Use System.Net.Mail to compose and download emails

Automated Email Replies with Inbox Repliers Plus

Configuring Automated Email Reply Rules for Inboxes and Catch-All Addresses using MailSlurp. Set up customizable repliers, track events, and more!

Receiving and reading emails

How to fetch and view emails with mail clients, code, or tests. Download attachments and view HTML previews using webhooks, REST, or SMTP.

Email Aliases

Email forwarding API for automatic email proxy. Setup auto-forwarding email aliases to mask a real email address.

Account setup and usage

Sign-up and login. How to manage your email settings, account plan, and team access. Change settings in MailSlurp.

Extract email content

How to match email content and use regex or server side matching to extract patterns. Capture links and verification codes from emails.

Other

Get Started with MailSlurp Examples

Integrate MailSlurp into your app with ease! Get multilingual examples and guides for developers. Sign up now and try example projects for free.

You can use the `mailer` package in Dart to send and receive emails.

How to compose mail and download emails in Dart or Flutter

What are SMTP mail ports

SMTP protocol uses several common ports to send and receive email messages. This post compares conventional ports and SSL support.

What are NBSP HTML Entities

NBSP non-breaking space use in email and HTML padding. Add   entities to your email to give consistent formatting.

What are DKIM records used for in email authentication?

What is Dmarc and DKIM and how to reduce email spam with DNS records. Email reputation and bounce rates are important for sender reputation.

What Is The Best SMTP Port To Use?

MailServers use TCP ports to transmit emails. Picking the right port between 25 vs 2555, 465 vs 587 in SMTP is easy with this guide.

Wait for emails - receive inbound emails in code

Fetch emails and attachments in code by waiting for new emails to arrive. MailSlurp waitFor methods provide automatic long-polling.

Transactional Email API Fundamentals

How to send email campaigns and transactional marketing emails using email API services like MailSlurp. Reduce bounces and increase deliverability.

To enhance security, reset MailSlurp API Keys.

Reset your account API access keys. Secure your applications by rotating passwords and keys in MailSlurp regularly.

The new location for Dashboard Guides is now available.

Revolutionize Email Testing and Development with MailSlurp's Dashboards: A Low Code Solution for Creating Disposable or Permanent Email Accounts.

The email addresses have expired.

Create auto expiring inboxes using MailSlurp disposable mailboxes. Email accounts that expire and self destruct.

The Most Advanced Guide on Azure Email Sending is 3 characters longer.

Sending Email in Azure: How to use MailSlurp to bypass SMTP limitations. Learn how to integrate and send emails securely in your Azure environment.

The MailSlurp SMTP Pop3 IMAP port settings are as follows:

How to configure and test SMTP, POP3, and IMAP inboxes using MailSlurp email APIs. Port 25, 465, 1143 and more.

Testing webhook responses

Webhook pub/sub messaging allows the processing of inbound messages at scale. Testing your webhook handler is important for end-to-end integrations.

Testing user sign-up (for integration and QA testers)

Use MailSlurp's Playground to test ideas or integrations with a real user sign-up, verification, and login process.

Testing email with Cypress test email accounts

Test email accounts for CypressJS. End-to-end testing with real email addresses using MailSlurp Cypress plugin.

Testing SMS OTP text messages using Cypress JS.

Automate SMS code integration testing using real phone numbers and browsers with Cypress and MailSlurp. Learn how in this tutorial.

Testing Next Auth email magic links with Playwright and MailSlurp

Next Auth email login tutorial and end-to-end testing guide.

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Examples

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