You can delete an account by tapping (o o o) | Various Account Settings | tap the account you want to delete | Remove account | Confirm with Yes.
BlueMail for iOS supports a Push Synchronization mode. This means that you will receive your emails as they arrive into your inbox. This is different than Fetch where emails arrive after you have refreshed your inbox.
The account you choose should match the provider of your email. If you are not sure which provider to choose, select Other and then enter your username and password. BlueMail will try and automatically select the provider for you.
BlueMail supports Gmail, Yahoo, Office 365, Outlook / Hotmail / Live, AOL, and iCloud; as well as many other IMAP providers. Use the Other option to select providers such as: Yandex, Mail.ru, GMX, mail.com, Hushmail, Zoho, Web.de, QIP, and ramble. BlueMail is constantly adding new providers, so stay tuned.
Grab your iPhone or iPad. Download BlueMail app from the App Store. Install it. Open BlueMail app. Choose your first email account (you have to configure at least one to start using the app). There you Go!