i wanted to create several auto messages for different

Hello,

i wanted to create several auto messages for different kinds of users.

1) Auto mail after few minutes after registration
2) Auto mail if they dont log for longer time to remind them site´s updates etc.

But i cannot find any option for this. Also i cannot see if i can make custom graphic design mails. There is just plain text option.
See screenshot please.

Regards, Marek