There are a few configuration items in Email This Issue that are configured with Projects, Issue Types or a JQL filter. They make up the scope.
The following settings have scope:
When Email This Issue searches for the best matching of the above entities, it evaluates their scope. The order of evaluation is specified is described examples in the following. In all screens where these entities are listed, the list order corresponds to the order of evaluation.
Selected Issue Types
Most important Story or Task issues from the selected projects.
Stories from the active sprints in Project1
project in (Project1, Project2) AND type in (Story, Bug, Task) AND text ~ "Security" OR project in (Project3, Project4) AND type = Epic
Stories, Bugs and Tasks related to "Security" in their title or description from Project1 and Project2, all Epics from Project3 and Project4
Story, Epic, Sub-task
All stories, epics or sub-tasks from all projects
All issues in Jira. It is perfectly valid to keep project, type and JQL empty. It will serve as a default configuration for issues not having a better matching scope.
Scoped entities are evaluated in the order they are listed. Those that are configured with projects or types are evaluated first, then those that have a JQL criteria, and finally the default ones.
Examples for Scope evaluation:
Matching Scopes from the above table
An Story issue that is in an active sprint in Project1 with priority Highest
An Story issue that is in an active sprint in Project1 with priority normal
An Story issue from Project3
An Story issue from Project2 with the word "security" in its summary
An Story issue from Project2 not related to "security"
An Bug issue from Project3