Inbound Email API: Receive, Parse, and Route Email With Webhooks
5 min readLearn how an inbound email API works, how to receive email with webhooks, and how to route, parse, and process inbound messages reliably.
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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SMTP & APIsIMAP vs POP3: Which Email Retrieval Model Should You Choose?
4 min readCompare IMAP and POP3 for real mailbox workflows, understand where SMTP fits, and choose the right retrieval model for support, client setup, migration, or testing.
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Email designHTML Email Creation and Sending: Templates, CSS Constraints, and Safe Testing
5 min readLearn how to build HTML emails that survive real clients, send them reliably through SMTP or APIs, and validate links, layout, and delivery before release.
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Email testingHow to Use the Gmail API for Automated Email Testing in CI
5 min readLearn how to use the Gmail API to verify OTP, password reset, and transactional emails in automated tests, and when a dedicated test inbox API is the better choice.
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Email testingHow to Send Email in Java with SMTP, HTML, and Attachments
4 min readLearn how to send email in Java with SMTP using Jakarta Mail, including plain text messages, HTML email, attachments, TLS setup, and safe inbox-level testing.
Read guideHow to Send Email From Excel: VBA, Outlook, and No-Macro Options
8 min readLearn how to send email from Excel using VBA, Outlook, mailto formulas, and SMTP. Covers bulk email, attachments, HTML email, and safer alternatives.
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Email testingHow to Build Reliable Email Testing in CI with a Test Inbox API
4 min readLearn how QA and engineering teams can stop flaky signup, reset, OTP, and notification tests by using isolated inboxes, explicit waits, and API-driven assertions.
Read guideFree Email Marketing Platforms Compared: Limits, Automation, and Hidden Tradeoffs
8 min readCompare free email marketing platforms by send limits, subscriber caps, automation, branding, deliverability, and upgrade risk so you choose the right tool before you outgrow it.
Read guideEnterprise QA Email Testing With UiPath, ReadyAPI, and ServiceNow
5 min readLearn how enterprise QA teams can add email and OTP assertions to UiPath, ReadyAPI, ServiceNow, and similar automation stacks without manual inbox checks.
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AuthenticationEmail Verification Tools: Selection Guide for Signup, Import, and Pre-Send Checks
10 min readCompare email verification tools by syntax, MX, disposable, role, catch-all, API, review states, inbox proof, and sender-risk controls.
Read guideEmail Verification API vs Email Testing: When to Use Each
4 min readLearn the difference between an email verification API and email testing, when to use each one, and why many teams need both to protect signup, delivery, and release workflows.
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MailSlurp guidesEmail Validation Regex: What It Catches, What It Misses, and a Safer Stack
4 min readLearn when to use regex for email validation, why perfect patterns are a trap, and how to pair syntax checks with domain, mailbox, and workflow verification.
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