Comparison

SMTP Tester Pro vs SSL Checker

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

SMTP Tester Pro

This application helps developers and IT professionals test and debug SMTP connections. It offers an intuitive interface for configuring servers, composing emails, and analyzing detailed transaction logs. Predefined templates for popular services and custom template management simplify setup and troubleshooting.

Highlights
  • SMTP server configuration
  • Support for various authentication methods
  • Multiple TLS modes
  • Customizable timeout settings
  • Email composition with CC/BCC
  • Template management
  • Detailed SMTP transaction logs
Features
Read full description

SMTP Tester Pro is the ultimate tool for developers, IT professionals, and email administrators who need to test and debug SMTP connections.ย  Available for iOS 16.0+ and iPadOS 16.0+, SMTP Tester Pro simplifies the process of setting up, testing, and troubleshooting email servers with its user-friendly interface and powerful features. Key Features: - Intuitive SMTP server configuration - Support for multiple authentication methods (Login, Plain, CRAM-MD5, XOAUTH2) - Multiple TLS modes (Normal, Ignore TLS, Require TLS, Require STARTTLS) - TLS fine-tuning with self-signed certificate support and custom OpenSSL cipher suites - Customizable timeout settings - HTML email composition with a built-in professional template and automatic plain-text fallback - File attachments from the Files app with automatic MIME-type detection and multi-selection - Custom email headers - Reply-To, X-Mailer, In-Reply-To, or any header your testing requires - Multiple recipients with comma-separated lists for To, CC and BCC - Reliable multipart delivery so HTML emails with attachments render correctly in every mail client - Template management for quick setup - Detailed SMTP transaction logs with a refined color palette for both light and dark themes - Light, Dark and System appearance modes - Face ID security option - Customizable log appearance with adjustable font size and per-message colors - Backup and restore functionality for templates - Unified native iOS design across every screen Whether you're setting up a new email server, diagnosing issues with existing configurations, or simply learning about SMTP protocols, SMTP Tester Pro provides all the tools you need in one convenient app. Ideal for: - Software Developers - System Administrators - Email Server Administrators - IT Support Professionals - Students learning about email protocols SMTP Tester Pro offers predefined templates for popular email services like Gmail, Outlook, Yahoo, and more, making it easy to get started.ย  You can also create and manage your own custom templates for frequently used configurations. The detailed logs provide insights into every step of the SMTP conversation, helping you identify and resolve issues quickly.ย  With customizable log appearance, including font size and color coding, you can tailor the app to your preferences for better readability. Security features include Face ID for app access and the ability to manage password visibility. The app also includes a "How to" guide to help you make the most of its features. Available on iPhone and iPad, SMTP Tester Pro maintains the same intuitive interface and powerful functionality across all your iOS devices. Download SMTP Tester Pro today and take the hassle out of email server debugging!

About

SSL Checker

Features
Read full description

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: โ€ข Monitor multiple domains โ€ข Detect expired and untrusted certificates โ€ข Schedule advance expiration alerts โ€ข Clean, focused interface โ€” no unnecessary clutter Stay ahead of certificate expiration and prevent unexpected downtime.

Screenshots

SMTP Tester Pro4 screens
SSL Checker3 screens

Verdict

The call

The clearest difference is price: SSL Checker at Free against SMTP Tester Pro's $3.99. SMTP Tester Pro's advantage is chart position (#187 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

SSL Checker is free to download; SMTP Tester Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences ยท 7 level
SMTP Tester Pro versus SSL Checker: the parameters behind the verdict, then further details
ParameterSMTP Tester ProSSL Checker
Price$3.99Free โ€” better
Positive reviews75.0% of reviewsโ€”
Update frequencyEvery 6 weeksโ€”
AdsNoNo
In-app purchasesNoNo
MonetizationPaidโ€”
Best chart rank#187 โ€” betterโ€”
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS16.615.6 โ€” better
Further details โ€” not scored
Size4 MB1 MB
Age rating4+4+
DeveloperDorian BorovinaTue Nguyen Minh

In-app purchases

None

SMTP Tester Pro

No in-app purchases

None

SSL Checker

No in-app purchases

Questions

Is SMTP Tester Pro free?
SMTP Tester Pro costs $3.99, with no in-app purchases.
Is SSL Checker free?
SSL Checker is free to download, with no in-app purchases.
Do SMTP Tester Pro or SSL Checker have ads?
Neither SMTP Tester Pro nor SSL Checker shows ads.

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