Office 365 IMAP OAuth With C# 

Dude, I've been looking at authenticating using OAuth for days and my head spinning. I didn't see anything that explained, so simply, that it was just a freaking POST to get the token. I had everything else worked out with Azure, just couldn't figure out how to get the token. Thanks!

Thank you so much for taking the time to share this, much appreciated! All the best!

followed exact instructions and app config, get Authentication Failed every time I try to authenticate the IMAP client

I have not tried yet but this is brilliant, thanks for the good video editing and information. I will try it to see how it works on my side.

Working like a charm, perfect, thank you.

Thank you so much, been benging my head on that for so long

Thank you, that's good for me.

Thank you so much for sharing your knowledge

Hello, APIs used by my organization are not visible. Grant admin consent for blue tenant to same. What should i do ?

Very helpful thank you so much!

This is what I need but stuck on New-ServicePrincipal - is not recognized as the name of a cmdlet...

What if I use Exchange Online without an Azure AD? I have a local AD...

Someone managed to solve this error? Failed Authentication

Please le me know how to access daily inbox email(day wise filter or timeinterval )

Thank you for this wonderful video. May I know how can we covert the email to html or text using mimekit?

This is incredible! ❤

What about sending emails? Isn't IMAP only for incoming?

Can you please discribe what is in secrets.cs?

Hello Bleu Hippotech ; Thank you for this great video . I have tested your code but I can only retrieve the old emails and not the new ones. Could you help me? Best Regards

This is wonderful video! You helped me ot get it working instantly! Now a quick question.. How do you send email once connected? Is there anything else I need to do on Azure?

This is all well and good, but how can you send an email from Office 365 IMAP OAuth With C#

Doubt .. for postman demonstration purpose we need to install module in ps using many commands? or It also needed for our c# code.

will it work for personal account that doesn't have office 365 subscription?

How would you send an email?

Grazie mi hai salvato

When I write Connect-ExchangeOnline after hit enter open Microsoft pop up after select user account show error "Selected user account does not exist in tenant 'Microsoft Services' and cannot access the application 'fb78d390-0c51-40cd-8e17-fdbfab77341b' in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account". What's the solution?

using HttpClient 💀

Do you know why i get the below error on await client.PostAsync(url, new FormUrlEncodedContent(data)); {StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers: { Pragma: no-cache Strict-Transport-Security: max-age=31536000; includeSubDomains

Hello, I have the same problem like 'hm to' Line: await client.AuthenticateAsync(oauth2); MailKit.Security.AuthenticationException HResult=0x80131500 Message=Authentication failed. Source=MailKit This exception was originally thrown at this call stack: [External Code] OAuthApplication.MailHandler.IMAPConnectAsync(MailKit.Net.Imap.ImapClient, OAuthApplication.AccessTokenModel, MailKit.FolderAccess) in MailHandler.cs [External Code] OAuthApplication.MailHandler.GetFirstUnreadMessageAsync(OAuthApplication.AccessTokenModel) in MailHandler.cs [External Code] $.$(string[]) in Program.cs API Permission: Microsoft Graph: IMAP.AccessAsUser.All, offline_access, openid, SMTP.Send, User.Read Office 365 Exchange Online: IMAP.AccessAsApp, Mail.Read, Mail.ReadWrite, Mail.Send. All of them have Granted for.... with green sign. (My admin did it, because I am only User Role) Admin also did operation in Powershell. Get-MailboxPermission -Identity xxxx | Format-List IsOwner : False AccessRights : {FullAccess, ReadPermission} Deny : False InheritanceType : All User : NT AUTHORITY\SELF UserSid : xxxx Identity : xxx IsInherited : False IsValid : True ObjectState : Unchanged Can anyone help me?

Thank you dude, your quick tutorial help me to understand this, I tried your steps but error occur when calling IMAPConnectAsync(client, accessToken), MailKit.Security.AuthenticationException: 'Authentication failed.' "This exception was originally thrown at this call stack: [External Code] OAuthApplication.MailHandler.IMAPConnectAsync(MailKit.Net.Imap.ImapClient, OAuthApplication.AccessTokenModel, MailKit.FolderAccess) in MailHandler.cs [External Code] OAuthApplication.MailHandler.GetAllMessagesAsync(OAuthApplication.AccessTokenModel) in MailHandler.cs [External Code] Program.$(string[]) in Program.cs" do you have any suggestion why this happen to me? I need this solution because I need to change my legacy apps credential method to OAuth2.