For most regular emails and newsletters I would agree. Those who truly care to know which HTML and css tags are available in email client are sending some for o

For most regular emails and newsletters I would agree. Those who truly care to know which HTML and css tags are available in email client are sending some for of ad. Say you’re a webshop and a customer has signed up for you “newsletter” then you kinda need HTML emails to show your advertised product directly in an email client.