SMS Short Codes Explained: Dedicated vs Shared and 10DLC Tradeoffs
3 min readLearn what SMS short codes are, when to use dedicated short codes, and how they compare with 10DLC and toll-free messaging.
Read guideEmail testing, deliverability, and API guides
Build more reliable email and SMS workflows with practical MailSlurp tutorials, implementation guides, and production-ready testing advice.
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SMS & OTPSMS OTP Verification: Token Design, Delivery Flow, and Abuse Controls
3 min readDesign robust SMS OTP verification with secure token handling, resend rules, regional delivery strategy, and conversion-aware monitoring.
Read guideSMS Intercept Attacks and Why SMS Multi-Factor Still Matters
3 min readThe Risks and Rewards of SMS-Based Multi-Factor Authentication: A Critical Analysis of Security Vulnerabilities and User-Friendliness.
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MailSlurp guidesSend emails in Swift 5 (on iOS, Mac, and Linux) with ease.
3 min readSend Email in Xcode: A Guide to Setting up Swift Environment and Using SMTP and HTTP APIs to Send Email in Swift for iOS/Mac Development
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SMTP & APIsSend Email with JavaScript: Browser, Node.js, and Email API Patterns
5 min readLearn how to send email with JavaScript safely. Compare mailto, Node.js SMTP, and JavaScript email API approaches with code examples and testing tips.
Read guideSAML SSO identity providers compared - top 10 single sign-on IdPs
3 min readLearn how MailSlurp provides SAML SSO email integration with various identity providers, including Microsoft Active Directory. #SAML #SSO #IdP
Read guideReformat .NET core projects using Resharper CLI tools
3 min readEasily format C# code in .NET Core projects with the free Resharper Command-Line Tool. Learn how to install and use it with this tutorial.
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Email testingPowerShell Send Email SMTP Guide (Send-MailMessage, API, and Testing)
5 min readSend email from PowerShell with Send-MailMessage, SMTP auth, multiple recipients, attachments, API sends, and MailSlurp receive-side testing.
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SMTP & APIsPHPMailer Tutorial: Send Email with PHP via SMTP (Production Ready)
3 min readLearn PHPMailer setup with Composer, secure SMTP configuration, HTML + text sending, attachments, and troubleshooting for production PHP apps.
Read guideOTP SMS Verification Tutorial: Build, Verify, and Test End to End
3 min readImplement SMS OTP verification with a secure backend flow, resend limits, and deterministic test coverage for signup and login journeys.
Read guideMulti-factor Authentication (MFA): All You Need to Know
4 min readMulti-Factor Authentication: Increasing Digital Security for Users. Learn how MFA works and its benefits in protecting against cyberattacks.
Read guideMulti-Factor Authentication (MFA) requires multiple verifications to access an account.
4 min readEnhance Your Security with Multi-Factor Authentication: Learn about the benefits, types, and working concept of this crucial identity verification method.
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