Hello @CharanjeetK3 ,
If you setup the advanced automation series for new list joins, manually adding the contacts will trigger the email to send.
If you remove contacts that were already in the list, then re-add them to the list, it should trigger the sequence for those contacts again. Otherwise you'd need to make a copy of the first step and send it to those contacts that initially missed it.
Please read through our main article on creating automated series to for instructions and visual guidance regarding advanced automated series.
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