MailSlurp guides for messaging, testing, reliability, and extract workflows

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How to configure email subdomains for custom servers

Efficiently manage subdomain custom mailboxes with SMTP/IMAP settings. Learn how to improve email performance and brand reputation with our guide.

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How to choose the perfect SMTP port

Which SMTP port should you use? Learn about popular options like 587, 465, 25, and 2525 and why choosing the right one matters for email delivery.

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How to Sign Up for MailSlurp and Set Up Your First API Workflow

Step-by-step MailSlurp sign-up guide for developers and QA teams, including email verification, API key setup, and first-run checks.

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How to Send E-Mail via Telnet (SMTP Command Guide)

Send e-mail via telnet using protocol-correct SMTP commands. Follow a step-by-step terminal session for EHLO, MAIL FROM, RCPT TO, DATA, and QUIT.

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GraphQL email mail API is a powerful tool for managing email.

Fetch and read emails with Graph-QL mail APIs. Control and inbox using MailSlurp and Graph query language instead of SMTP protocol.

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Getting Started with MailSlurp API (Developer Quickstart)

Install an SDK, configure your API key, create an inbox, send an email, and verify receipt in minutes with MailSlurp.

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Forward SMS text messages to code and tests via Webhooks or HTTP

Create real phone numbers to handle inbound SMS messages. Direct TXT to your application or test suites. Process SMS two-factor authentication flows.

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File to Base64: encode files in Node.js, Python, Java, Go, and C#

Learn how to convert file to base64 in multiple languages, upload base64 payloads to APIs, and avoid common size and encoding mistakes.

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Fetch Email Messages and Attachments in Code

Capture and read inbound emails with MailSlurp in tests and applications. Learn message listing, content retrieval, attachments, and webhook-ready receive patterns.

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Email wildcard catch-all for custom domains

How to Set Up a Catch-All Email Inbox with MailSlurp for Your Custom Domain and Define Inbound and Outbound Rules.

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Email testing services ensure quality and effectiveness of email campaigns.

Example tutorial for testing emails and email related processes with disposable mailboxes. Generate SMTP email accounts for test purposes.

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Email templates for testing and transactional workflows

Create reusable email templates and validate HTML rendering, variables, links, and OTP content. Includes CI-friendly testing patterns with MailSlurp.

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