I'm sending a mail template and it's not rendering UTF-8 characters correctly only on Yahoo Mail, which is quite weird.
MJML is adding by default utf-8 charset tag, I have not changed this default, and it's correctly appearing in the source code of the mail.
Do you have an idea of what could be wrong?
The issue was caused by my client client which was not correctly sending the HTML header.
I managed to send
Content-Type: text/html; charset=UTF-8and it's now working fine in Yahoo Mail