How to Clean Up my Mailbox?

The easiest way to clean up your mailbox is through Webmail.

You can access Webmail directly at with your email account, where is your website hosted with SiteGround.

The next step is to delete the messages that you don't need and empty your Junk/Trash folders in order to save space.

In case you are using an email client such as Thunderbird, Outlook, or MacMail you can do the same via your email client.