Max number of CC address logged in Jira

[Jacob]

Hi,

If creating an issue using email and having multiple address in the CC field. What is the maximum number of Users Jira will put in the requested participant field?

Thanks,

Jacob 

[Pablo Brincat]

Hello Jacob,

The maximum number of users that Jira can add to the ‘Requested Participants’ field when creating an issue via email with multiple addresses in the CC field depends on several factors, including your Jira instance’s configuration and the version of Jira you are using.

Jira Cloud vs. Jira Server/Data Center

1. Jira Cloud: For Jira Cloud, Atlassian imposes certain limits for performance and spam prevention reasons. However, the exact number isn’t explicitly documented in Atlassian’s public documentation. It’s generally recommended to keep the number of CC’d users reasonable to avoid issues.

2. Jira Server/Data Center: For self-hosted versions (Server/Data Center), the limit might be more flexible and governed by your server’s capacity and the configuration of your mail server. However, like with Jira Cloud, there isn’t a specific number provided in the documentation.

Factors Affecting the Limit

• Performance Concerns: Having a very high number of users CC’d can impact the performance of your Jira instance and email server.
• Email Server Restrictions: The limit may also be influenced by the restrictions of your email server. Some email servers have their own limits on the number of recipients in the CC field.
• Spam Filters: Large numbers of CC’d addresses might trigger spam filters, either on your email server or within Jira’s mail handling system.

Best Practices

• Moderation in CC: It’s generally a good practice to moderate the number of CC’d users to avoid performance issues or unintentionally triggering spam filters.
• Testing: If you need to add a large number of CC’d users, it’s advisable to test this with your specific Jira setup to see how it handles the load and to ensure it aligns with your operational requirements.

Recommendations

If you find yourself needing to include a large number of users frequently, you might want to explore other options like Jira groups or distribution lists, which can be more manageable.

Finally, if you need a definitive answer or are encountering limitations, reaching out to Atlassian Support would be the best course of action, especially if you’re on a Jira Cloud instance. They can provide more specific information based on the latest updates and configurations of their services.