Email SDK for .NET: Open, view, and convert EML and MSG files
Process email files without Outlook or bulky email clients. View, read, and convert EML and MSG messages to PDF — including attachments, headers, and formatting — with a lightweight, portable solution.
Email processing toolkit
View, convert, and archive EML and MSG emails with full HTML rendering — including CSS, JavaScript, images, SVG, hyperlinks, and forms. EML is the standard format for Outlook Express, Thunderbird, and Windows Live Mail. MSG is used by Microsoft Outlook. Instance pooling enables faster batch processing.
Convert to PDF
Export emails and attachments to PDF, with attachments appended after the message body. Use PDF/A for long-term archiving.
Annotate
Add highlights, text notes, sticky notes, shapes, arrows, stamps, and other annotations to email content.
Sign
Apply digital signatures to secure and authenticate archived emails.
OCR
Extract and search text in 100+ languages with the built-in OCR engine.
Barcode reading
Detect 1D and 2D barcodes, including DataMatrix, QR and Micro QR code, PDF417, and Aztec Code barcodes.
Redact
Permanently remove sensitive text and images from EML and MSG files before sharing or archiving.
Print EML and MSG files with full attachment support.
Full feature parity
Apply any PDF or image operation — editing, processing, conversion — to your email files.
Demo
Email viewer in action
See how DocuVieware renders EML and MSG files directly in the browser with full viewing and navigation support.
Loading Email viewer...
get started
How to use
Download and install the GdPicture.NET package to access compiled demo applications and multi-language sample projects with full source code.
Explore demo apps
Find compiled demo applications in
\Samples\Bin\.Explore multi-language source code
Find C# and VB.NET demo apps and source code in
\Samples\WinForm\.Visit reference guide
Explore other code snippets within the online reference guide.
Example of usage
The example creates a PDF document from an MSG file.
using GdPictureDocumentConverter gdpictureDocumentConverter = new GdPictureDocumentConverter();// Load the source document.gdpictureDocumentConverter.LoadFromFile("C:\temp\source.msg", GdPicture14.DocumentFormat.DocumentFormatMSG);// Save the output in a new PDF document.gdpictureDocumentConverter.SaveAsPDF("C:\temp\output.pdf");Using gdpictureDocumentConverter As GdPictureDocumentConverter = New GdPictureDocumentConverter() ' Load the source document. gdpictureDocumentConverter.LoadFromFile("C:\temp\source.msg", GdPicture14.DocumentFormat.DocumentFormatMSG) ' Save the output in a new PDF document. gdpictureDocumentConverter.SaveAsPDF("C:\temp\output.pdf")End UsingTrusted by 3,000+ customers and Fortune 500 companies
15Y+
More than 15 years of experience developing our SDK
10K+
Trusted by more than 10,000 developers
Check out our other supported formats
Frequently asked questions
What email formats are supported by the GdPicture.NET email SDK?
The SDK provides full support for EML and MSG file formats. EML is the standard format used by email clients such as Microsoft Outlook Express, Thunderbird, and Windows Live Mail, while MSG is the format supported by Microsoft Outlook.
Can the SDK convert emails to PDF, including their attachments?
Yes. The GdPicture.NET email SDK enables the conversion of EML and MSG files to PDF format. During this process, email attachments can be embedded within the resulting PDF as attachment annotations, ensuring all original content is preserved.
Does the SDK support viewing and printing of emails within applications?
Yes. The SDK allows for the rendering of email content directly within applications, providing the functionality to view, read, and print emails and their attachments. This facilitates seamless integration of email handling capabilities into both desktop and web applications.
Is it possible to annotate and redact information in emails using the SDK?
Yes. The GdPicture.NET email SDK offers features to add and customize annotations — such as highlights, text notes, and shapes — to email content. Additionally, it provides redaction tools to remove sensitive or personal information from EML and MSG files, enhancing data privacy and compliance.
What platforms and development environments are compatible with the GdPicture.NET email SDK?
The SDK is designed for versatility, supporting integration into various platforms, including:
- .NET Framework — Suitable for WinForms and WPF applications.
- Web applications — Compatible with ASP.NET and other web-based platforms.
- Cloud applications — Facilitates deployment in cloud-based environments.
This broad compatibility ensures developers can incorporate email functionality into a wide range of application types.
Is GdPicture’s email format support related to what Nutrient offers in its web and mobile SDKs?
Yes. GdPicture.NET is one of Nutrient’s core products. The email format processing technology — including MSG and EML rendering — is shared across Nutrient’s desktop, web, and mobile SDKs, ensuring consistent email document handling on all platforms.
60-day free trial