using Google.Apis.Auth.OAuth2;
using Google.Apis.Gmail.v1;
using Google.Apis.Gmail.v1.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace GmailInboxApi {
class Program {
// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/gmail-dotnet-quickstart.json
static string[] Scopes = {
GmailService.Scope.GmailReadonly
};
static string ApplicationName = "Gmail API .NET Quickstart";
static void Main(string[] args) {
UserCredential credential;
using(var stream = new FileStream("client_secret.json", FileMode.Open, FileAccess.Read)) {
string credPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
credPath = Path.Combine(credPath, ".credentials/gmail-dotnet-quickstart.json");
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(GoogleClientSecrets.Load(stream).Secrets, Scopes, "user", CancellationToken.None, new FileDataStore(credPath, true)).Result;
Console.WriteLine("Credential file saved to: " + credPath);
}
// Create Gmail API service.
var service = new GmailService(new BaseClientService.Initializer() {
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
});
var inboxlistRequest = service.Users.Messages.List("your email id");
inboxlistRequest.LabelIds = "INBOX";
inboxlistRequest.IncludeSpamTrash = false;
//get our emails
var emailListResponse = inboxlistRequest.Execute();
if (emailListResponse != null && emailListResponse.Messages != null) {
//loop through each email and get what fields you want...
foreach(var email in emailListResponse.Messages) {
var emailInfoRequest = service.Users.Messages.Get("your email id", email.Id);
var emailInfoResponse = emailInfoRequest.Execute();
if (emailInfoResponse != null) {
String from = "";
String date = "";
String subject = "";
//loop through the headers to get from,date,subject, body
foreach(var mParts in emailInfoResponse.Payload.Headers) {
if (mParts.Name == "Date") {
date = mParts.Value;
} else if (mParts.Name == "From") {
from = mParts.Value;
} else if (mParts.Name == "Subject") {
subject = mParts.Value;
}
if (date != "" && from != "") {
foreach(MessagePart p in emailInfoResponse.Payload.Parts) {
if (p.MimeType == "text/html") {
byte[] data = FromBase64ForUrlString(p.Body.Data);
string decodedString = Encoding.UTF8.GetString(data);
}
}
}
}
}
}
}
Console.ReadLine();
}
public static byte[] FromBase64ForUrlString(string base64ForUrlInput) {
int padChars = (base64ForUrlInput.Length % 4) == 0 ? 0 : (4 - (base64ForUrlInput.Length % 4));
StringBuilder result = new StringBuilder(base64ForUrlInput, base64ForUrlInput.Length + padChars);
result.Append(String.Empty.PadRight(padChars, '='));
result.Replace('-', '+');
result.Replace('_', '/');
return Convert.FromBase64String(result.ToString());
}
}
}
