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FakeSMTP vs TreeSize

Professional comparison and analysis to help you choose the right software solution for your needs.

FakeSMTP icon
FakeSMTP
TreeSize icon
TreeSize

FakeSMTP vs TreeSize: The Verdict

⚡ Summary:

FakeSMTP: FakeSMTP is an open source SMTP test server that allows developers to test email sending from their applications without actually sending emails through an SMTP server. It is lightweight, easy to install, and useful for testing email functionality during development.

TreeSize: TreeSize is a disk space manager for Windows that allows you to efficiently analyze disk usage and free up disk space. It scans local and network drives and visually displays folder sizes, helping identify large files and folders taking up space.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature FakeSMTP TreeSize
Sugggest Score — —
Category Development File Management
Pricing Open Source —

Product Overview

FakeSMTP
FakeSMTP

Description: FakeSMTP is an open source SMTP test server that allows developers to test email sending from their applications without actually sending emails through an SMTP server. It is lightweight, easy to install, and useful for testing email functionality during development.

Type: software

Pricing: Open Source

TreeSize
TreeSize

Description: TreeSize is a disk space manager for Windows that allows you to efficiently analyze disk usage and free up disk space. It scans local and network drives and visually displays folder sizes, helping identify large files and folders taking up space.

Type: software

Key Features Comparison

FakeSMTP
FakeSMTP Features
  • Runs as a local SMTP server that receives email messages
  • Allows sending email messages to it during development for testing
  • Does not actually send the emails out, just captures them locally
  • Lightweight and easy to install
  • Works cross-platform on Windows, Linux and Mac
  • Open source and free
TreeSize
TreeSize Features
  • Scans local, network and cloud drives
  • Visualizes folder sizes
  • Identifies largest files and folders
  • Supports many file systems
  • Filters results
  • Exports reports

Pros & Cons Analysis

FakeSMTP
FakeSMTP

Pros

  • No need to connect to a real SMTP server during development
  • Avoids sending test emails accidentally to real users
  • Saves time by speeding up email testing
  • Simple to set up and use
  • Being open source allows customization if needed

Cons

  • Limited to testing email sending, not receiving
  • Not a full email test platform with reporting
  • Requires rerouting application to use it instead of normal SMTP
  • Does not test actual email deliverability
TreeSize
TreeSize

Pros

  • Easy to use interface
  • Fast scanning
  • Powerful filtering and search
  • Good visualization of disk usage
  • Helps free up disk space quickly

Cons

  • Limited cloud drive support
  • No native Linux or Mac support
  • Paid version required for some advanced features

Pricing Comparison

FakeSMTP
FakeSMTP
  • Open Source
TreeSize
TreeSize
  • Not listed

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Learn More About Each Product

FakeSMTP
FakeSMTP
Reviews, pricing & alternatives →
TreeSize
TreeSize
Reviews, pricing & alternatives →

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