C#

SMTP Examples for C#

• Send a Simple Email
• Send Email With Attachments
• Send HTML Email with Attachments
• Send Email with hotmail.com, live.com, or outlook.com
• Send HTML Email with Image to iPhone
• Get GMail SMTP OAuth2 Access Token for Desktop App
• GMail SMTP Send using Previously Obtained OAuth2 Access Token
• Refresh GMail SMTP OAuth2 Access Token
• Send email using smtp.gmail.com with SSL (port 465).
• Send email using SMTP STARTTLS.
• Send email using SSL (port 465).
• Send Email using office365 SMTP
• Send a Simple HTML Email
• Embed Image in HTML Email
• SMTP using HTTP Proxy
• Load EML and Send
• Sending S/MIME Encrypted Email
• Send Signed Email using PFX File
• Send Signed Email using PFX File (long version)
• SMTP using SOCKS5, SOCKS4 Proxy
• Send Email with a vCard
• Send High Priority Email (SMTP, X-Priority header)
• Send Signed and Encrypted EDI Email (EDIFACT)
• Send Encrypted Email to Multiple Recipients
• Send Email and Put Copy in "Sent" Folder
• SMTP SSH Tunneling (Port Forwarding)
• Send Email Asynchronously using a Task
• SMTP over Multiple Hop SSH
• Send HTML Email with Embedded Image Loaded from Memory
• Send HTML Email with External CSS as Related Item
• Send HTML Email with CSS as Related Item using Content-Location
• Send a Signed Email using RSASSA-PSS with SHA256
• Send Encrypted Email using RSAES-OAEP with AES-128 CBC and SHA256
• OAuth2 for a GMail using a Service Account Key
• SMTP XOAUTH2 Authentication
• Send Email using smtp-mail.outlook.com with Password Authentication
• SMTP Enable TLS 1.3
• Send Email to Distribution List
• GMail SMTP port 587 with "less secure" Password Authentication
• SMTP NTLM Authentication
• Create Non-Multipart Email with XML Body that is an Attachment
• Send Email with Multiple Reply-To Addresses
• Send aes-gcm authEnvelopedData Encrypted Email