Is there any way I can view the main mail page every time i open the Mail App in my iPhone?
By "Main mail page", I'm guessing you mean the page with all your mail accounts listed.
If that's what you mean, the best way is to make sure when you leave the mail app, you work your way back to that page.
I do that every time & when I close out the app it goes back to the inbox of my yahoo mail account each time I reopen Mail.
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