问题
I want to add image like company logo in email subject using php mail function i have added
$subject = "<img src=\"https://www.donndraper.com/images/logo.png\" width=\"50px\">");
$header = "From: $email\n Content-Type: text/HTML;";
回答1:
What JerrySeeger was trying to say, in a fairly condescending manner, is that e-mail does not support images in the subject.
The SMTP protocol was designed 20 years before HTML was even invented.
What you desire is simply not possible.
回答2:
You cannot include custom images (such as your company logo), however, there are a limited number of Unicode images that you can use in the header.
Some clients render them by using color images rather than treat them as characters in a font. The following article has a few images comparing how various mobile devices render them:
- Symbols in Subject Lines: How to Get Your Email Noticed
And you can see Wikipedia for a long list of the available characters, and if for some reason your font does not support those characters, the second link are bitmap renders of those characters:
- Wikipedia: Miscellaneous Symbols
- Online Uniode Character Map
回答3:
@GUS well said.. and you guys are all wrong.
You may use any unicode utf-8 or Base64 in mail subject and latest Trend in mass Mailers. its pretty easy to implement .
来源：https://stackoverflow.com/questions/17087660/image-in-email-subject-using-php