Mail handlers periodically poll for new emails from the selected incoming mail server and process them based on the handler used. The Create a new issue or add a comment to an existing issue handlers will create a new issue in Jira, where the email subject becomes the issue summary and the email body becomes the issue description. If the email subject contains an issue key to an existing issue, the email body will be added as a comment to the issue.

• Add a comment from the non-quoted email body: This adds the email body that is not quoted with the > or | symbols as a comment to an existing issue.
• Add a comment with the entire email body: This adds the entire email body as a comment to an existing issue.
• Create a new issue from each email message: This always creates a new issue from an email.
• Add a comment before a specified marker or a separator in the email body: This adds the email body before a marker line is specified as a regular expression. Contents after the marker will be ignored. This is useful when you do not want to include old contents from a forwarded email. Depending on the email client being used, you will need to use regular expressions (regex) to work out the text to be excluded. For most cases, the following regex will work:

/From: *|___.*|On .*wrote:|----Orig.*|On
.*(JIRA).*/