Mailchimp Developer LogoMailchimp Developer Wordmark
  • April 19, 2023Action Required

    Subject and TO header no longer require encoding



    We’ve recently updated how we encode email headers, so that Subject Lines and the recipient headers (like TO, CC, etc) no longer require users to encode non-ASCII characters.


    We made this change to make it easier for users to send emoji or non-standard text in the Subject, To Address, and To Name. Now, you can pass in those characters directly instead of having to encode them in your email.