SMTP Tester Pro vs SSL Checker

Test any SMTP server from your iPhone or iPad. Enter the server, pick the encryption and login method, send a real test email, and see the complete SMTP conversation in a color-coded transaction log. SMTP Tester Pro is built for IT admins, developers and email administrators who need to know why mail isn't going out. Connection and security: - TLS modes: Require STARTTLS (port 587), Require TLS (SSL/TLS, port 465), Normal and Ignore TLS - Login methods: LOGIN, PLAIN, CRAM-MD5 and XOAUTH2, or no login for relays and test servers - Self-signed certificates and custom OpenSSL cipher suites - Adjustable timeout Real test emails: - To, CC and BCC with comma-separated addresses - HTML body with a built-in template and a plain-text fallback - File attachments from the Files app - Custom headers such as Reply-To or X-Priority Transaction log: - Every command and server reply, color-coded, with a color legend - Successful and failed sends are saved in the log, grouped by day - Search a log, show or hide timestamps, copy or share it - Clear error messages with the server's own reply and troubleshooting tips Templates: - Server settings for Microsoft 365, Gmail, Outlook.com, iCloud Mail, Yahoo Mail, AOL Mail, Zoho Mail, GMX Mail, Yandex Mail and Mail.com - Save your own servers as templates, stored encrypted on your device - Password-protected backup and restore of your templates Privacy and appearance: - Face ID lock and password visibility settings - Passwords and access tokens are never written to the log - Light, Dark and System appearance, adjustable log font size and colors - Works on iPhone and iPad

SSL Checker is a lightweight monitoring tool designed for system administrators, DevOps engineers, and hosting professionals. Track SSL certificate expiration dates across multiple domains in one place. Instantly see expiry status, certificate issuer, validity period, and receive scheduled alerts before certificates expire. Built for reliability and simplicity: • Monitor multiple domains • Detect expired and untrusted certificates • Schedule advance expiration alerts • Clean, focused interface — no unnecessary clutter Stay ahead of certificate expiration and prevent unexpected downtime.