SMTP Email Sender
Send a test email through any SMTP server — set host, port, TLS and credentials, then compose and send.
Overview
A web-based SMTP client for sending email. Point it at any SMTP server (Gmail, SendGrid, Mailgun, Amazon SES, Postfix, your own relay) with host, port, TLS mode and credentials, then compose a message — From, To, Cc, subject and a plain-text or HTML body — and send it. Perfect for testing SMTP credentials, deliverability and TLS settings. Signed in, you can reach private / LAN / localhost relays and save servers that sync across devices — the password is encrypted at rest with AES-GCM. Signed out, the connection is one-time, public-host only, and never stored.