Let's say you have a company for wedding management. You want to send email to every user, who has wedding in 45 days, 30 days, 15 days, X days.... So basically, the automation with counting down the days to wedding.
I this article you will find out how to set up automation like that.
Let’s say every user, how is going to have wedding planned, will have tag added “wedding” - which you will check in the Filters. Then you also have to have created custom attribute with “date” type for your user’s wedding (for example 2019-09-25), let's name this custom attribute: ‘wedding_date’. Therefore, the automation to send email to every user who has wedding, e.g. in 45 days, would look like that:
On Date and Time with Repeat every day + Filters: Tag added ‘wedding’ AND ‘wedding date’: less than -44 days ago AND more than -46 days ago ---> Send an email campaign.
Please, pay attention, that in Filters “-” is added in front of the numbers - this is crucial, as this filter is for X days AGO, but with "-" we are reversing it to the future and then it’s going to work correctly for this case.