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mailkit.dll

Updated: Files Available: 30
Verified Metadata AI Analysis x86 (32 bit) x86-64 (64 bit)

Download and install mailkit.dll to fix missing or corrupted DLL errors.

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DLL Overview

Last Updated
Oct 13th, 2025
Filename
mailkit.dll
Company
.NET Foundation
Product
MailKit
Description
MailKit
Architecture
x86 (32 bit) x86-64 (64 bit)
Metadata Consensus
24/30 Files 80%
Higher percentages indicate stronger agreement across versions. View available versions or browse repository metadata to compare differences between variants.

DLL Download Options

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About mailkit.dll

mailkit.dll is a DLL file (Dynamic Link Library) used by Windows programs to share code and resources. It allows multiple applications to use the same functions, improving performance and reducing redundancy.

Overview

mailkit.dll is a library that's a part of MailKit, a cross-platform .NET library that's designed to provide comprehensive email support, including IMAP, SMTP, and POP3. It was developed by the .NET Foundation.

MailKit stands out as a popular choice for developers when it comes to integrating email functionalities into their .NET applications. One of its significant advantages is its robustness when compared to other solutions. It's designed to handle scenarios where network connections drop unexpectedly, ensuring that operations can resume seamlessly. This resilience makes it particularly useful for applications that require reliable email functionalities.

Furthermore, MailKit offers a level of security not always found in other libraries. It supports various authentication methods and is capable of taking advantage of SSL/TLS encryption, ensuring that email communications remain secure.

If a .NET application on your system indicates a missing mailkit.dll, it likely uses MailKit for its email-related functions. To resolve such issues, one might need to ensure that the MailKit library is correctly installed and referenced. Developers embedding MailKit in their projects need to ensure the correct distribution of this DLL along with their application, so users don't face runtime errors related to missing dependencies.

File information is supported by Human Assisted Artificial Intelligence and should be used as a helpful tool. However, it is important to keep in mind that this information may not be up-to-date or entirely accurate.

Troubleshooting DLL Errors

Most errors involving mailkit.dll occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application or replacing the DLL resolves the issue. The steps below cover the most common and reliable ways to fix these errors.

Windows DLL Error Examples

This application has failed to start because mailkit.dll was not found. Re-installing the application may fix this problem.
mailkit.dll Not Found.

Fixes and Solutions

The first step in resolving DLL errors is to completely uninstall the affected software and reinstall its latest version. We know this does not always solve the problem, which is why DLLme exists. If reinstalling the application does not help, or if you are unsure which app is causing the error, follow the steps below. These are the most common solutions for fixing mailkit.dll errors.

  • Repair Windows: Make sure Windows is fully updated, then open Windows Terminal or PowerShell as an administrator (search for “PowerShell” in the Start menu, right-click it, and choose “Run as administrator”). This allows you to repair the Windows component store and run the System File Checker (SFC).

    Repair the Windows component store so SFC can pull clean files:

    DISM /Online /Cleanup-Image /RestoreHealth

    Scan all protected system files and automatically repair problems:

    sfc /scannow
  • Uninstall & Reinstall: On this DLL page, check the Company/Product section to identify the related app, then fully uninstall it. If you plan to continue using it, reinstall the latest version. Be sure to save or back up any important data before uninstalling. Windows or antivirus software may sometimes quarantine DLL files, especially if the DLL is unfamiliar or appears suspicious. Check your antivirus quarantine or logs to determine if this is the cause of your issue.
  • Download the DLL: Download the latest 32-bit or 64-bit version of the DLL directly from our repository using the download button above. Most users will need the 64-bit version, but if you are unsure, or if a 64-bit version is not available, you can install both the 32-bit and 64-bit DLLs. DLLme verifies DLLs that come from our admins, partners, and trusted affiliates. User-uploaded files may be verified later if a trusted source is confirmed.
  • Register the DLL: Most DLL files do not need registration, but some DLLs are COM components and must be registered to work correctly. If registration is required, open Windows Terminal or PowerShell as an administrator.

    Register the DLL (you can also drag the DLL file into the window to automatically fill in its full path):

    regsvr32 "C:\path\to\mailkit.dll"

    If you are registering a 32-bit DLL on 64-bit Windows, use the 32-bit RegSvr32:

    C:\Windows\SysWOW64\regsvr32 "C:\path\to\mailkit.dll"

    Or open Windows Terminal/PowerShell in the DLL’s folder and run:

    regsvr32 mailkit.dll

How to Install mailkit.dll

To install mailkit.dll, place the DLL file in the appropriate Windows system folder or in the same folder as the application’s .exe file. If you are not sure which version (32-bit or 64-bit) to use, you can safely install both.

On 64-bit versions of Windows, place 64-bit DLL files in:

C:\Windows\System32\mailkit.dll

Place 32-bit DLL files in:

C:\Windows\SysWOW64\mailkit.dll

Or place the DLL file next to the application’s .exe:

C:\path\to\exe\mailkit.dll

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