Receiving e-mails (POP3)
| Troubleshooting | Solving typical problems of e-mail receiving. |
| Using secure login | Logging in the POP3 mail account using secure methods. |
| Learning the number of messages | Learning the number of messages in the mailbox. |
| Learning the total size of messages | Learning the total size occupied by all messages in the mailbox. |
| Downloading headers | Downloading the headers of the messages. |
| Detecting attachments | Detecting whether a message has any attachments without downloading entire message. |
| Downloading entire message | Downloading entire message. |
| Search for new messages | Skipping already downloaded messages and downloading only new ones. |
| Displaying a message | Downloading and displaying a message. |
| Deleting a message | Deleting a message from the mailbox. |
| Bounced messages (POP3 part) | Processing bounced messages. |
| Handling events | Tracking the progress of e-mail receiving and making user interface responsive while communicating with the POP3 server. |
| OAuth 2.0 authentication | Using OAuth 2.0 (XOAUTH2) to access email. |