Can hidden preheader text affect e-mail spam score / deliverability? – SEO
Lots of people seem to recommend hidden preheader text. For those who don't know, preheader text is a way to control the e-mail content preview, like this: An example of hiding it would be: <div style="display:none;font-size:1px;color:#333333;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> Wishing you a safe…