Universal SMTP Tester
Test any SMTP server configuration with detailed diagnostics
Quick Setup
Custom SMTP Server
Gmail (smtp.gmail.com)
Outlook/Hotmail (smtp-mail.outlook.com)
Yahoo (smtp.mail.yahoo.com)
Zoho (smtp.zoho.com)
Mailgun (smtp.mailgun.org)
SendGrid (smtp.sendgrid.net)
Amazon SES (email-smtp.us-east-1.amazonaws.com)
Advantedge (s.mail25.info)
SMTP Host
SMTP Port
25 (Plain)
465 (SSL)
587 (TLS)
2525 (Alt)
Encryption
TLS
SSL
None
Username
Password
From Email
To Email
Subject
Message
This is a test email sent via SMTP on 2026-04-16 16:41:26
Run SMTP Test