Documentation for JIRA 5.2. Documentation for other versions of JIRA is available too. 
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If an user is included in the Notification Scheme user groups/project roles, when he/she create an issue or comment on issue, he/she is supposed to get the notification emails.
If others in the same notification scheme all able to receive the notification emails but himself/herself, it means the SMTP email server is working properly. He/she also can get notification emails if other people comment on that issue.
In this case, you need to check on the user profile if the 'Preferences > My changes'
To view your JIRA user profile:
In 'My changes' you need to set 'Do not notify me' to 'Notify me'.
Note: This feature released since JIRA 5.0.3.