SMTP is an email service protocol for delivering emails to the receiver. The SMTP error code 550 occurs when you try to send an email from the Outlook mail client.
There are not many ways to prevent spam from piling up in your Inbox. Here’s how you can filter out most of them.
AT&T Email error 0x800CCC0F occurs when mails are not being sent or received through AT&T services. Due to the technical glitches causing it, many email functions are disabled. The computer’s Operating System might get frozen.
Open the Gmail app.Select the inbox tab you want to delete.You’ll find the Empty Box button over the Compose button.