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Trello/Slack integration security concerns

David O_Brien
Contributor
July 24, 2025

I'm interested in integrating these two products but have concerns about security. Our slack instance is internal. Are messages/posts from Slack going to external servers before they go to Trello? If this is true then we can't use this integration, just as we can't use email integration. Thanks.

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Caity
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
July 28, 2025

If you have AI summaries enabled, then the information will go through the OpenAI servers for processing; however, the data will not be stored on these servers.

In the case of cards created from email, because these are directly emailed to Trello, they are temporarily stored on Trello's mail servers, as you mentioned here. This does not apply to cards created from Slack messages.

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