Establish a connection to your mail server (e.g., Gmail or Outlook) using the IMAP protocol. Note that Gmail requires an if Two-Factor Authentication (2FA) is enabled.
Search for messages and iterate through their body parts to identify attachments. It is critical to identify and cast attachments to MimePart to access their raw content. download email with attachment c#
In modern C# development, downloading emails with attachments is typically achieved using , the recommended replacement for the deprecated System.Net.Mail . 1. Set Up Your Environment Establish a connection to your mail server (e
using (var client = new ImapClient()) { // For Gmail: imap.gmail.com, Port 993, Use SSL client.Connect("imap.gmail.com", 993, SecureSocketOptions.SslOnConnect); client.Authenticate("your-email@gmail.com", "your-app-password"); client.Inbox.Open(FolderAccess.ReadWrite); } Use code with caution. 3. Fetch Emails and Download Attachments It is critical to identify and cast attachments
var uids = client.Inbox.Search(SearchQuery.All); foreach (var uid in uids) { var message = client.Inbox.GetMessage(uid); foreach (var attachment in message.Attachments) { // Extract filename or provide a fallback var fileName = attachment.ContentDisposition?.FileName ?? attachment.ContentType.Name; using (var stream = File.Create(Path.Combine("C:\\Downloads", fileName))) { if (attachment is MessagePart) { // Handle nested email attachments (.eml) var rfc822 = (MessagePart)attachment; rfc822.Message.WriteTo(stream); } else { // Handle standard file attachments var part = (MimePart)attachment; part.Content.DecodeTo(stream); } } } } Use code with caution. 4. Advanced Options How To Download Email Attachments With MailKit C#
To get started, install the NuGet package via the Package Manager Console : powershell Install-Package MailKit Use code with caution.
You will need to use the MailKit.Net.Imap and MimeKit namespaces in your project. 2. Connect and Authenticate
Establish a connection to your mail server (e.g., Gmail or Outlook) using the IMAP protocol. Note that Gmail requires an if Two-Factor Authentication (2FA) is enabled.
Search for messages and iterate through their body parts to identify attachments. It is critical to identify and cast attachments to MimePart to access their raw content.
In modern C# development, downloading emails with attachments is typically achieved using , the recommended replacement for the deprecated System.Net.Mail . 1. Set Up Your Environment
using (var client = new ImapClient()) { // For Gmail: imap.gmail.com, Port 993, Use SSL client.Connect("imap.gmail.com", 993, SecureSocketOptions.SslOnConnect); client.Authenticate("your-email@gmail.com", "your-app-password"); client.Inbox.Open(FolderAccess.ReadWrite); } Use code with caution. 3. Fetch Emails and Download Attachments
var uids = client.Inbox.Search(SearchQuery.All); foreach (var uid in uids) { var message = client.Inbox.GetMessage(uid); foreach (var attachment in message.Attachments) { // Extract filename or provide a fallback var fileName = attachment.ContentDisposition?.FileName ?? attachment.ContentType.Name; using (var stream = File.Create(Path.Combine("C:\\Downloads", fileName))) { if (attachment is MessagePart) { // Handle nested email attachments (.eml) var rfc822 = (MessagePart)attachment; rfc822.Message.WriteTo(stream); } else { // Handle standard file attachments var part = (MimePart)attachment; part.Content.DecodeTo(stream); } } } } Use code with caution. 4. Advanced Options How To Download Email Attachments With MailKit C#
To get started, install the NuGet package via the Package Manager Console : powershell Install-Package MailKit Use code with caution.
You will need to use the MailKit.Net.Imap and MimeKit namespaces in your project. 2. Connect and Authenticate