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Do Copilot prompts affect mailbox storage quotas?

Brady Ward 5 Reputation points
2026-02-25T15:44:42.6433333+00:00

From what I understand, Copilot prompts are stored within a hidden folder in the prompting user's mailbox. What am I trying to understand is whether or not the prompts in this hidden folder affect that individual user's mailbox storage quota?

ie. If my quota is 50GB and I have thousands of prompts, will this slowly fill up and affect my sending/receiving of mail? If so, are there any ways to circumvent this without losing retention of the prompts?

Microsoft Copilot | Microsoft 365 Copilot | Development
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  1. Q&A Assist
    2026-02-25T15:44:49.89+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    No, the prompts stored in the hidden folder of the user's mailbox do not affect the mailbox storage quotas. The memories, which include saved prompts and details inferred from chat history, are stored in a hidden folder in the user's Exchange mailbox, but they do not count towards the mailbox storage quota. Therefore, having thousands of prompts will not fill up the mailbox storage and will not affect the sending or receiving of mail.

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