Marketo Opt-in checkbox/option

[SM2]

Hi, 

Is there a way for me to provide a opt-in for emails through Marketo? 

I've been trying to look up information on this, but I couldn't find anything. 

[SanfordWhiteman · Accepted solution]

Of course. You can create a custom Boolean field (or, better yet, a DateTime field indicating not only that they've opted in but when they did so).

Also sounds like you need to familiarize yourself with the built-in system fields Unsubscribed, Marketing Suspended, and Blocklisted. Lots of notes on those in past threads!