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Browse free open source C# Email Software and projects below. Use the toggles on the left to filter open source C# Email Software by OS, license, language, programming language, and project status.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • Yeastar: Business Phone System and Unified Communications Icon
    Yeastar: Business Phone System and Unified Communications

    Go beyond just a PBX with all communications integrated as one.

    User-friendly, optimized, and scalable, the Yeastar P-Series Phone System redefines business connectivity by bringing together calling, meetings, omnichannel messaging, and integrations in one simple platform—removing the limitations of distance, platforms, and systems.
    Learn More
  • 1
    Aegis Implicit Mail (AIM)

    Aegis Implicit Mail (AIM)

    Send Mime and Smime Emails to Any Type of Mail Server

    Aegis Implicit Mail is a free and open source library which is designed to provide fast and developer friendly API to send emails using SMTP ports. Binaries are available in the form of NuGet package: https://www.nuget.org/packages/AIM Please check http://pki.tools/aim.html as well AIM Supports : * None Ssl Mails * Implicit Ssl Mails * Explicit Ssl Mails * Smtp Connection test * Detect Ssl type of mail server * Attachments for MIME and S/MIME message. * In-line attachment and separate file attachment * All content types and mimes * SMIME , Signed and Encrypted mails In an integrated way Sadly, Microsoft.Net.Mail Ssl Mails does not support Implicit Ssl Mail and it is still used by many servers, including port 465 of Gmail here AIM comes to make a readable and fast alternative to send your smtp mails. For unicode issues please refer to https://sourceforge.net/p/netimplicitssl/tickets/4/ . We really appriciate any help in testing of different encodings
    Downloads: 0 This Week
    Last Update:
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  • 2
    MV2
    There are a lot of tools and plugins to fix security issues of the dignified mail system. The goal of this project is to redefine a system that takes the problems of our time into account. Be sure to visit this project on github: https://github.com/mv2project/mv2
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    MultiAntivirus

    MultiAntivirus

    Antivirus and Security Suite for Windows

    Downloads: 0 This Week
    Last Update:
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  • 4
    Zipped Steganography

    Zipped Steganography

    Hide files into ZIP archives

    Hide files into ZIP archives. Support Password protect mode for ZIP archives. Auto attaching ZIP file into Outlook
    Downloads: 0 This Week
    Last Update:
    See Project
  • Deliver trusted data with dbt Icon
    Deliver trusted data with dbt

    dbt Labs empowers data teams to build reliable, governed data pipelines—accelerating analytics and AI initiatives with speed and confidence.

    Data teams use dbt to codify business logic and make it accessible to the entire organization—for use in reporting, ML modeling, and operational workflows.
    Learn More
  • 5

    aleXa Steganography Tool

    Tool to encode a message inside an image using LSB

    xst is a desktop tool written in C# that allows to encode a message inside an image file. The information is Encrypted, protected by a password.
    Downloads: 0 This Week
    Last Update:
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