I wanted to share some research from Experian relating to using symbols in subject lines. Looks like some symbols experienced a decent lift in opens. You can download their free whitepaper or just read the article here: experian.com/blogs/marketing-forward/2012/07/17/thinking-about-using-symbols-in-your-email-subject-lines/
Cheers, Patty
A
Anonymous
November 24, 2014
Does anyone have any more guidance for this? I copied and pasted a unicode symbol from the PDF but the symbol isn't showing up for me. I called Marketo Support and they did not know the solution to this either.