Hey @Al Amin Sagor15!
my confirmation email is going to subscribers promotion section, not in the inbox. what to do now?
Our deliverability team has a guide on the Promotions tab here15!
I also want to change my mail id because it isn't quite good. its email@example.com
Yes, you'll want to change your sending email to an email address that ends in a custom domain name — we have information on this here16, and you can add a new sending email from this page17 in your account.
Also i want to do a good landing page.
If you're seeking more strategy-based content, I strongly recommend browsing our blog19 & Tradecraft issues31! In particular, you might find this Tradecraft issue helpful: Landing Pages: The Best Way to Promote Your Next Big Idea34