问题
I have used the following code to send mail from my web application using a gmail account. My question is, can i change the sender address to another address other than original sender(gmail) address? My code is as follows:
System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
System.Net.NetworkCredential cred = new System.Net.NetworkCredential(\"sample@gmail.com\", \"*******\");
Whatever i do is useless as i always receive mail from sample@gmail.com. Is it possible to change it?
I have changed to
mail.From = new System.Net.Mail.MailAddress(\"sample@yahoo.com\"); but i received the mail with the from address sample@gmail.com and not from the new \"From\" address. I think gmail smtp overwrites the from address with the original credential.
回答1:
Gmail doesn't allow you to change the FROM to something different than your gmail account.
It doesn't matter what you use, they over-write it, before they relay it on. This prevent spamming/spoofing.
回答2:
This is the solution:
- use the codes above to set mail.From = new MailAddress(address, display name)
- in Gmail, go to Mail Settings >> Accounts and Import.
- Add the email account you will use as sender in "Send Mail As". (tick as Alias)
This works for me
回答3:
Yes just use the From property of the MailMessage
eg.
mail.From = "newemail@email.com";
EDIT: Also, see this post for more detailed info on how to emails via gmail in C#
Sending email in .NET through Gmail
EDIT: Although this works for mail in general, it appears this won't work for gmail as google overwrite it before its sent (see @Dave wanta's answer)
回答4:
If you have a limited number of senders you can do as @philip suggested. For instance you may have customerservice@example.com, simon@example.com and philip@example.com or even alias@example.com. As long as they are approved senders on the actual gmail.com website you can send from them.
Gmail.com : Sending mail from a different address
If you are expecting to send from an arbitrary user (such as a customer service form on a website where the user enters their email and you don't want them emailing you directly) about the best you can do is this :
msg.ReplyToList.Add(new System.Net.Mail.MailAddress(email, friendlyName));
If you're in a controlled environment this works great, but please note that I've seen some email clients send to the from address even when reply-to is specified (I don't know which).
回答5:
Check #56 and #58. They might be relevant to what you want to do https://code.google.com/p/google-apps-script-issues/issues/detail?id=172
来源：https://stackoverflow.com/questions/3871577/change-sender-address-when-sending-mail-through-gmail-in-c-sharp