MailSlurp resources
Email API, deliverability, and QA engineering blog
Tactical writing for teams building reliable email and SMS workflows in development, CI, and production operations.
MailSlurp publishes practical content for engineers, QA teams, and platform owners who need dependable messaging workflows.
Start here: core testing and delivery guides
- How to test emails in development
- Email testing checklist
- Mailinator tutorial
- Mailinator alternatives
- Best email deliverability testing tools
Engineering deep-dives and implementation notes
- Spring Boot Playwright example
- Typesense search on Kubernetes
- Website security headers
- Markdown CMS and version control compared
- HTML email in Gmail
- NBSP in HTML email
Broader strategy and analysis
More in this section
10 Best Email Fonts for Readability and Consistent Rendering Choose email-safe fonts that render reliably across major clients. Compare 10 practical options with use-case guidance and fallback strategy. 1111 SMTP Connections failing - please investigate the issue promptly. Troubleshooting MailSlurp SMTP Connection Issues: Debug with Telnet, check integrations & SMTP server status, get solutions for undelivered messages. A comparison of different instant messaging platforms Get ahead of competitors by using SMS/TXT messaging platforms for scalable text communication. Save time and stay flexible with these 8 top apps. A Comprehensive Multi-factor Authentication Guide Mastering Multi-Factor Authentication: A Guide to Implementation and One-time Passwords" - A comprehensive guide to secure and user-friendly MFA. A SMS message segment refers to a single part of a longer text. Understanding the Cost of SMS Segments: How Message Length Impacts Your Wallet Affiliate Marketing: What it is and How to Start Using it Discover the power of affiliate marketing and start making good money online today! Learn the basics and steps to profit from it in our guide. AI Email Parser: OCR and Structured Extraction for Invoices, PDFs, and Support Emails Learn when to use an AI email parser, how OCR and structured extraction fit together, and how to turn inbound email and attachments into usable business records. Amazon SES Explained: Where SES Fits in Sending, Testing, and Deliverability Learn what Amazon SES handles, how MailSlurp strengthens product email workflows around it, and how to compare the two for sending, testing, and deliverability. Are Emails Case Sensitive? Gmail, Outlook, and App Rules Find out whether emails and email addresses are case sensitive, how Gmail and Outlook behave, and how to test safe normalization in signup, OTP, reset, and login flows. Authentication vs Authorization: The Difference That Prevents Security Incidents Authentication confirms identity. Authorization controls access. Learn where teams confuse them and how to design safer access models. Autogenerate SDK clients for .NET APIs using Autorest and OpenAPI How to create API libraries for your DotNET project using SwashBuckle Swagger annotations and build-time client generation Automated Email Testing Explained for CI and Release Teams Implementation guide for automated email testing in CI, including assertions, release-gate design, and anti-patterns.