I have been using automation workflows for email drip marketing.

Is it possible to create a campaign starting in Jan that talks about home maintenance tips in Jan and has a new tip every month. Then have the ability to add new contacts in March that start receiving the March emails (instead of starting back at the first email from Jan)?   I have searched for hours and cannot figure out how to do this. 

If this is not possible, then can I have 12 campaigns (one starting every month) and have a trigger that adds contacts created in March to the March campaign? I am not sure how to create that trigger. 

Thank you!

Thanks!