Unwanted mails are also known as SPAM. You can either delete them or apply filters. Filters are an easy way to block messages.
You can't.
gmail
Emails recovery from the trash folder of GmailSign in Gmail on your computer.On the left side corner of the Gmail page, click More >Trash folder.Now check the box next to any emails you want to move.Click Move to (folder name).Choose where you want to move the emails to, like your Gmail inbox.
Emails can be of any type of gmail. You can send a professional mail or a personal mail. You can also attach various attachments with it.
you can block emails from specific senders by clicking block sender in Microsoft Outlook Or mark the sender as Spam in gmail/yahoo. In this case the email from that sender will always go to Trash and will be deleted after 30 days or as per the settings done by you to handle trash emails.
no it does not.
No if someone just visits your gmail profile they will not be able to see all of your individual emails.
If your Gmail is full then possibly, but if it is in your inbox then you should be able to.
Yes, sending and receiving messages on Gmail is free.
You cannot block sites on Gmail as it is not a browser. You can block sites on browser. Gmail itself is a website running on browser.
Get a gmail account. They are really good at that. If you already have a gmail account, then I'm sorry, I don't know how to help you. In gmail, spam goes to spam, it does not get automatically deleted.
The total number of emails can be seen on the top of the page. A page of Gmail normally shows 50 emails. You can also make the number of mails per page 100,150 etc.
All the deleted Emails are stored in the Trash tab. These Emails can be recovered easily. They could be brought back to the primary emails.