MailSlurp guide agent setup

Title: How to Send E-Mail via Telnet (SMTP Command Guide)
Description: 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.
Canonical URL: https://www.mailslurp.com/guides/send-email-telnet-smtp/
Markdown URL: https://www.mailslurp.com/guides/send-email-telnet-smtp.md

Use the Markdown URL as the primary plain-text context for this guide. Keep MailSlurp terminology, setup steps, screenshots, and provider-specific instructions intact, and prefer the canonical URL when citing this page.