GemBox.Email Downloads RSS Feed

On this page you can see GemBox.Email release notes and download the binaries. This information is also available on NuGet NuGet .

Releases 2026

Date Notes Binaries
2026-07-01
  • Various small fixes and improvements.
 GemBox.Email
2026.7.100.zip
2026-06-01
  • Various small fixes and improvements.
 GemBox.Email
2026.6.100.zip
2026-05-06
  • Various small fixes and improvements.
 GemBox.Email
2026.5.100.zip
2026-04-03
  • Fixed issue with attachment's Content-Disposition in EML reader.
 GemBox.Email
2026.4.100.zip
2026-03-03
  • Added support for setting display name with MailAddress's single string constructor.
  • Added support for MailMessage.Priority.
 GemBox.Email
2026.3.100.zip
2026-02-02
  • Fixed issue with invalid header content in PopClient.
  • Fixed issue with header parameter that has left parenthesis on its name in EML reader.
  • Fixed issue with error identification when server returns 550 in MailAddressValidator.Validate.
 GemBox.Email
2026.2.100.zip
2026-01-02
  • Various small fixes and improvements.
 GemBox.Email
2026.1.100.zip

Releases 2025

Date Notes Binaries
2025-12-05
  • Various small fixes and improvements.
 GemBox.Email
2025.12.101.zip
2025-11-05
  • Added support for GraphClient.Proxy.
  • Fixed issue with invalid charset in EML reader.
  • Fixed issue with uploading message with inline attachment in GraphClient.
  • Fixed issue with invalid boundary in MBOX reader.
 GemBox.Email
2025.11.100.zip
2025-10-03
  • Fixed issue with attachment file name having trailing quote in EML reader.
  • Fixed issue with empty attachments collection in EML reader.
 GemBox.Email
2025.10.100.zip
2025-09-04
  • Fixed issue with missing message flags on GraphClient.GetMessage.
 GemBox.Email
2025.9.101.zip
2025-08-14
  • Fixed issue with inlining embedded images without Content-Id.
  • Fixed issue with invalid headers in EML reader.
 GemBox.Email
2025.8.103.zip
2025-07-03
  • Fixed issue with attachment file name encoding in EML reader.
 GemBox.Email
2025.7.102.zip
2025-06-15
  • Added support for email categories in MSG files.
 GemBox.Email
2025.6.102.zip
2025-05-07
  • Fixed issue with dot absence check on domain part in mail address validation.
  • Added support for Content-Location when sending email with ExchangeClient and GraphClient.
  • Fixed issue with missing signature image in MSG writer.
  • Fixed issue with duplicate entry ID in MSG reader.
 GemBox.Email
2025.5.102.zip
2025-04-04
  • Fixed issues with attachment filename and disposition type when attaching an embedded message.
  • Fixed issue with 'To' header in MSG reader.
  • Fixed issue with RTF body in MSG reader.
  • Fixed issue with '.p7s' attachment in MSG files.
  • Fixed issue with invalid Content-Type header in EML reader.
 GemBox.Email
2025.4.103.zip
2025-03-11
  • Fixed issue with empty body text in EML reader.
 GemBox.Email
2025.3.103.zip
2025-02-14
  • Fixed issue with attachment name in EML reader.
 GemBox.Email
2025.2.103.zip
2025-01-24
  • Added support for uploading messages in ImapClient, ExchangeClient, and GraphClient.
  • Fixed issue with emails that have more than five custom headers in GraphClient.
  • Fixed issue with 'ANSI_X3.4-1986' encoding in EML reader.
  • Fixed issue with false positive mail address validation.
 GemBox.Email
2025.1.103.zip

Releases 2024

Date Notes Binaries
2024-12-05
  • Fixed issue with empty charset in EML reader.
  • Fixed issue with default subject and sender encoding in MSG reader.
  • Fixed issue with missing root properties stream in MSG reader.
  • Increased the System.Text.Json version dependency.
  • Fixed issue with RTF body encoding in MSG reader.
 GemBox.Email
17.0.1274.zip
2024-11-04
  • Added support for immutable IDs in GraphClient.
  • Fixed issue with MS-TNEF messages in GraphClient.
  • Added support for MailMessage.RequestDeliveryReceipt and MailMessage.RequestReadReceipt.
 GemBox.Email
17.0.1263.zip
2024-10-08
  • Fixed issue with invalid content in MSG reader.
  • Fixed issue with invalid 'From' address in MSG reader.
 GemBox.Email
17.0.1255.zip
2024-09-05
  • Fixed issue with draft emails on GraphClient.
  • Added support for ExchangeClient.SendMessage(MailMessage, bool).
 GemBox.Email
17.0.1250.zip
2024-08-13
  • Added support for PropertyTag.AttachmentHidden in MSG files.
  • Fixed issue with invalid Attachment.FileName in MSG reader.
  • Added support for GraphClient.
 GemBox.Email
17.0.1242.zip
2024-07-05
  • Fixed issue with invalid header data in MSG reader.
  • Fixed issue with SOAP serialization in ExchangeClient.
 GemBox.Email
17.0.1234.zip
2024-06-07
  • Added support for RTF encoded plain text body.
  • Fixed issue with attachments that have no data in MSG reader.
  • Fixed issue with subjects containing underscore in EML reader.
 GemBox.Email
17.0.1226.zip
2024-05-07
  • Fixed issue with missing attachment in EML reader.
  • Fixed issue with invalid header content in MSG reader.
 GemBox.Email
17.0.1214.zip
2024-04-06
  • Various small fixes and improvements.
 GemBox.Email
17.0.1201.zip
2024-03-04
  • Fixed issue with large tokens in OAuth authentication.
 GemBox.Email
17.0.1194.zip
2024-02-13
  • Added support for signed message that has multipart/mixed type.
 GemBox.Email
17.0.1192.zip
2024-01-15
  • Fixed issue with ExchangeClient when connecting with older version of exchange server.
 GemBox.Email
17.0.1185.zip

Releases 2023

Date Notes Binaries
2023-12-08
  • Fixed issue with invalid headers section ends in MSG reader.
  • Fixed issue with Shift-JIS encoding and code page 932.
  • Added support for ContentEntity.DecodeContent method.
 GemBox.Email
17.0.1178.zip
2023-11-16
  • Various small fixes and improvements.
 GemBox.Email
17.0.1169.zip
2023-10-21
  • Fixed issue with missing attachment properties in MSG writer.
 GemBox.Email
17.0.1163.zip
2023-09-05
  • Fixed issue with commands sequence for specific SMTP server configuration.
 GemBox.Email
17.0.1147.zip
2023-08-04
  • Fixed issue with parsing encoded header structures.
 GemBox.Email
17.0.1138.zip
2023-07-07
  • Added support for extension headers in EWS.
  • Fixed issue with PGP signed emails in MSG reader.
  • Fixed issue with header values that start with '=' in EML reader.
 GemBox.Email
17.0.1133.zip
2023-06-12
  • Fixed issue with References header in MSG writer.
  • Fixed issue with header ending on extra line breaks in EML reader.
 GemBox.Email
17.0.1125.zip
2023-05-09
  • Fixed issue with invalid encoding in EML reader.
  • Fixed issue with empty plain body in MSG reader.
  • Added support for MailMessage.GetEmbeddedBodyHtml method.
 GemBox.Email
17.0.1113.zip
2023-04-05
  • Various small fixes and improvements.
 GemBox.Email
17.0.1099.zip
2023-03-10
  • Fixed issue with read-only MSG files.
  • Fixed issue with invalid attachments in MSG reader.
  • Added support for MailMessage.SetTaggedProperty and Attachment.SetTaggedProperty methods.
  • Added support for MailMessage.GetTaggedProperty and Attachment.GetTaggedProperty methods.
  • Fixed issue with missing message date in MSG reader.
  • Fixed issue with compressed RTF body in MSG reader.
  • Added support for MailMessage.GetSignature method.
 GemBox.Email
17.0.1089.zip
2023-02-03
  • Fixed issue with continuation parameters in EML reader.
  • Fixed issue with empty header in MSG reader.
  • Fixed issue with conversation index in MSG reader.
 GemBox.Email
17.0.1064.zip
2023-01-03
  • Fixed issue with MIME serializer in MHTML reader.
  • Added support for subfolders in ExchangeClient.
  • Fixed issue with plain text body being read as HTML body in MSG reader.
 GemBox.Email
17.0.1056.zip

Releases 2022

Date Notes Binaries
2022-12-14
  • Fixed issue with missing MailMessage.From value in MSG reader.
  • Fixed issue with 'ISO 8859-1' encoding in EML reader.
  • Added support 'binary' charset in EML reader.
  • Fixed issue with setting email's date header in EML writer.
  • Fixed issue with reading MSG embedded messages.
  • Added support for app-only OAuth2 with impersonation in ExchangeClient.
 GemBox.Email
17.0.1045.zip
2022-11-09
  • Improved performance of ImapClient.GetMessage method.
  • Added support for PopClient.GetSizeLong method.
  • Fixed issue with reading empty multipart entities in MHTML reader.
  • Fixed issue with 'iso8859-15' encoding in EML reader.
  • Fixed issue with reading attachment name in MSG reader.
  • Fixed issue with empty Attachment.ContentId in EML reader.
 GemBox.Email
17.0.1024.zip
2022-10-12
  • Fixed issue with PopClient.IsAuthenticated being true when authentication failed.
  • Fixed issue with XOAUTH2 POP and IMAP authentication.
 GemBox.Email
17.0.1013.zip
2022-09-06
  • Added support for retrieving plain body from EWS.
 GemBox.Email
17.0.1009.zip
2022-08-12
  • Added support for S/MIME messages.
  • Added support for Attachment.Save methods.
 GemBox.Email
17.0.1000.zip
2022-07-21
  • Fixed issue with invalid header in MHTML reader.
  • Fixed issue with encoding names in MHTML reader.
  • Fixed issue with parameter value continuations.
 GemBox.Email
15.0.1153.zip
2022-06-10
  • Added support for parameter value continuations.
  • Fixed issue with embedded email file name resolution.
  • Fixed issue with 4096 LCID in MSG reader.
 GemBox.Email
15.0.1143.zip
2022-04-21
  • Added support for MailMessage.ConversationIndex property.
  • Fixed issue with wrong encoding in MSG reader.
  • Fixed issue with saving HTML body in MSG writer.
  • Fixed issue with extra attachment appearing in email files.
 GemBox.Email
15.0.1134.zip
2022-03-09
  • Added support for compressed RTF body in MSG writer.
  • Added support for naming attached file when adding calendar.
  • Fixed issue with fully linked Xamarin builds.
 GemBox.Email
15.0.1124.zip
2022-02-01
  • Fixed issue with similar entity boundaries in EML reader.
  • Fixed issue with reading attachments of invalid size.
  • Fixed issue with HTML body encoding in MSG reader.
 GemBox.Email
15.0.1116.zip
2022-01-05
  • Added support for ExchangeClient.SearchMessages methods.
 GemBox.Email
15.0.1106.zip

Releases 2021

Date Notes Binaries
2021-12-06
  • Added support for non-ASCII (UTF-8) characters in message headers.
 GemBox.Email
15.0.1100.zip
2021-11-08
  • Fixed issue with attached calendars.
  • Added support for specifying SSL protocols on client connect.
  • Fixed issue with unnamed attachments in S/MIME MSG message.
 GemBox.Email
15.0.1096.zip
2021-10-01
  • Fixed issue with ContentType name containing non-ASCII characters in EML reader.
  • Fixed issue with reading failed authentication from POP response.
 GemBox.Email
15.0.1086.zip
2021-08-26
  • Fixed issue with ID property in EML reader.
 GemBox.Email
15.0.1080.zip
2021-06-17
  • Fixed issue with large tokens in OAuth authentication.
 GemBox.Email
15.0.1076.zip
2021-05-14
  • Added timestamp to communication logging.
  • Added support for selecting subfolders in EWS.
 GemBox.Email
15.0.1073.zip
2021-03-09
  • Fixed issue with fetching partial message with message/rfc822 attachments.
  • Fixed issue with invalid header in MSG reader.
 GemBox.Email
15.0.1064.zip
2021-02-09
  • Added support for .NET 5.
  • Fixed issue with reading plain body as HTML body in MSG files.
  • Fixed issue with retrieving emails with PopClient.
 GemBox.Email
15.0.1056.zip
2021-01-08
  • Fixed issue with parsing invalid Content-Type values.
  • Added support for ImapClient.PeekMessage methods.
  • Added support for new line character in calendar properties.
  • Added support for updating custom headers with mail merge.
 GemBox.Email
15.0.1049.zip

Releases 2020

Date Notes Binaries
2020-11-05
  • Fixed issue with sender's email address in MSG reader.
  • Added support for OAuth 2.0 authentication.
 GemBox.Email
15.0.1039.zip
2020-10-19
  • Fixed issue with invalid Id values in MSG reader.
  • Fixed issue with attachment name of embedded messages in MSG writer.
  • Added support for reading Id structures without domain part.
  • Improved performance of mail address validator.
  • Added support for reading MSG files of Compound File Binary Format version 4.
  • Fixed issue with reading raw RTF from MSG file.
 GemBox.Email
15.0.1036.zip
2020-09-14
  • Fixed issue with invalid headers in EML writer.
  • Added support for MSG messages with MessageClass containing only IPM.Note value.
 GemBox.Email
15.0.1029.zip
2020-06-26
  • Fixed issue with invalid header in EML reader.
  • Added support for downloading mail message without attachments.
  • Fixed issue with Chinese characters in MSG reader.
  • Added support for specifying LocalEndPoint in email clients.
 GemBox.Email
15.0.1026.zip
2020-05-22
  • Fixed issue with assembly binding by unifying DLL version numbers for different platforms.
  • Fixed issue with deserializing invalid References header body.
  • Added partial support for reading S/MIME (multipart/signed) messages in ExchangeClient.
 GemBox.Email
15.0.1021.zip
2020-03-17
  • Fixed issue with empty sender in EWS.
  • Fixed issue with missing mailbox in EWS.
  • Added support for plain text body written in compressed RTF in MSG files.
 GemBox.Email
15.0.1014.zip

Older Releases

Version Help Setup Binaries
GemBox.Email 1.3 GemBox.Email 1.3 Help GemBox.Email.Setup
13.0.0.1046.msi		 GemBox.Email
13.0.0.1046.zip
GemBox.Email 1.1 GemBox.Email 1.1 Help GemBox.Email.Setup
11.3.30.1042.msi		 GemBox.Email
11.3.30.1042.zip

How to install

NuGet Package

If you're using GemBox.Email.dll as package, then run the following command in NuGet Package Manager Console:

Update-Package GemBox.Email

Private Assembly

If you're referencing GemBox.Email.dll from some folder, then download the latest ZIP available above, and unpack it inside that folder.

Global Assembly

If you installed GemBox.Email Setup and you're referencing GemBox.Email.dll from Global Assembly Cache (GAC), then download and install the latest GemBox.Email.Setup.msi.