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Email SDK: Convert, Open, View, Archive EML & MSG Files

View and manipulate emails in your WinForms, Web, and Cloud applications just like you would with PDF files and images!

Process and archive emails and their attachments with full EML and MSG support.
EML is the standard format used by Microsoft Outlook Express, Thunderbird, and Windows Live Mail. MSG is the extension supported by Microsoft Outlook.

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Email support


EML is a shortened version for the word email. It is the standard format used by Microsoft Outlook Express, Thunderbird, and Windows Live Mail.
It was developed to comply with the standard RFC 5322, so it can be used with most email clients and applications. However, there is no specification available because il is commonly considered to be an extension of IMF (Internet Message Format) as defined in RFC 5322.
EML files are usually simple text files and can be opened in Notepad or a web browser, either by changing the extension from eml to txt or HTML, or by changing the file association to Notepad.
They store each message as a single file, and attachments can either be included as MIME content in the message or written off as a separate file, referenced from a marker in the EML file.


MSG (Microsoft Outlook Item) is the extension supported by Microsoft Outlook in the following products: Microsoft Exchange Server 2003-2013 and Microsoft Office Outlook 2003-2013. Its specification is covered by the Microsoft Interoperability Program.
The .msg file format can store a single Message object (like an email, an appointment, a contact, a task, and more), in a file. Attachment objects, are also present in the file.

Email support in GdPicture.NET

A browser is required to support EML and MSG content as input into the whole toolkit scope.

As it is the case for HTML, email support currently uses Chrome's rendering engine to display your document with the highest accuracy, whether Chrome is installed on the machine or not.

If Chrome is already installed on your machine, no action on your part is necessary.

If it’s not the case, you have two choices:

  1. Install Google Chrome Portable in the installation folder. You can download Google Chrome Portable here.
  2. Set the path of the chrome.exe portable version with the SetWebBrowserPath() method.

Main features

Convert to PDFConvert emails and attachements in PDF. Attachements will automatically be added after the email message. If you need to archive your messages, convert them to PDF/A.
AnnotateAdd and customize a whole range of annotations and comments: highlighter, text, sticky note, link, shape, arrow, stamp, and more.
SignSecure your emails with a digital signature.
OCRSearch for words in 100+ languages with our ppowerful and innovating OCR engine.
Read barcodesRecognize 1D and 2D barcodes including DataMatrix, Qr and Micro Qr Code, PDF417, and Aztec code barcodes.
RedactRemove sensitive and personal information (text and images) in EML and MSG files with the redaction tool.
PrintFull printing support is available for EML and MSG files and their attachments.
All Applications
On all applications!Full email support is available with our WinForms, Web, and Cloud toolkits.
And more
And more!Everything you do with PDFs and images, you can do it with your emails.

Try our online demo

Download your EML and MSG files and try our online demo powered by DocuVieware.

How to use

Download and install GdPicture.NET package from here.

You will find a compiled demo applications in [Install directory]\Samples\Bin\

You will find an example of a full application in [Install directory]\Samples\DotNet\GdPicture.NET 14\

You will find other code snippets within the online reference guide found here

Check our other supported formats