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FakeSMTP vs SumatraPDF

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

FakeSMTP icon
FakeSMTP
SumatraPDF icon
SumatraPDF

FakeSMTP vs SumatraPDF: 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.

SumatraPDF: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

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 SumatraPDF
Sugggest Score — —
Category Development Office & Productivity
Pricing Open Source 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

SumatraPDF
SumatraPDF

Description: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

Type: software

Pricing: Open Source

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
SumatraPDF
SumatraPDF Features
  • Lightweight and fast PDF reader
  • Supports many document formats like PDF, ePub, MOBI, XPS, DjVu, CHM, CBZ, CBR
  • Customizable with themes, keyboard shortcuts
  • Tabbed document interface
  • Supports annotations and highlighting
  • Continuous scrolling
  • Supports reflowable text
  • Supports digital signatures
  • Supports comics book formats
  • Supports eBooks
  • Supports syncing open documents across devices

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
SumatraPDF
SumatraPDF

Pros

  • Lightweight and fast
  • Supports many document formats
  • Free and open source
  • Customizable
  • Good support for comics and eBooks

Cons

  • Limited annotation features compared to advanced PDF editors
  • Lacks OCR capabilities
  • No cloud storage integration
  • No mobile apps

Pricing Comparison

FakeSMTP
FakeSMTP
  • Open Source
SumatraPDF
SumatraPDF
  • Open Source

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Learn More About Each Product

FakeSMTP
FakeSMTP
Reviews, pricing & alternatives →
SumatraPDF
SumatraPDF
Reviews, pricing & alternatives →

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