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Apple's iOS 27 turns Siri into an agent that searches work email and drafts messages
Apple's iOS 27 rebuilds Siri, the iPhone's assistant for nearly 15 years, as an LLM agent that searches work email and drafts messages to colleagues. Fleet managers now need a rule for how far it may act on work mail and calendars before staff install the update.
The Product Desk · Product desk
What happened
- Apple's iOS 27 is out after months of beta testing, a subdued release that Fast Company says centres on AI features, smaller improvements and bug fixes.
- The update replaces Siri's legacy assistant with an LLM-powered agent that holds persistent, context-aware conversations and carries out admin work.
- Siri can search a user's mail for messages about a specific project, from a particular client, or carrying a specific attachment, and surface them.
- Siri can build a calendar event from a spoken sentence and asks follow-up questions, such as what to call the event, when details are missing.
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Why it matters
- exposure Every question an employee asks Siri about the week or the inbox now puts work-account content in front of an LLM agent, a data path the device policy has to cover.
- decision Device teams now need an explicit rule for what Siri may do with managed mail and calendar accounts, set before staff install the update.
- precedent Agent features now ship inside a routine annual OS release, so approving an iOS update means testing what the assistant does with work accounts as well as checking bug fixes.
A Fast Company reviewer asked the new Siri what the week looked like and got the answer from the calendar. The reviewer then asked, "Can you email Jessica to remind her of these events?" Siri composed a message to Jessica, a work colleague, setting out the events [3].
The Siri that device teams wrote their policies around was a voice lookup tool, and a weak one. Fast Company says it has never been very useful next to ChatGPT or Claude in its nearly 15 years on the iPhone [6]. Going by the review, what users actually do with the new one is read. The reviewer called search "perhaps one of the most helpful productivity uses for the new Siri" [7].
The work-data question about Siri splits along the line between reading and writing. Reading is where the most work content passes through the assistant. Writing is where a mistake lands on another person, in an email to a colleague [3] or an event Siri assembled from speech [5].
The review does not say whether Siri sends that email itself or leaves a draft for the user to approve, and it does not cover where requests are processed or what Apple lets administrators restrict [3]. The policy depends on those answers. I'd let staff use the read side on internal mail once Apple documents where the processing happens, and keep outward actions on client accounts behind a confirmation step that has been checked on a test phone first. That caution costs the release's plainest time saving. A calendar entry that took numerous taps across separate fields for date, time, location, attendees and name [8] now takes one spoken sentence [5].
Each Siri request sorts on two axes: whether the result stays with the employee or reaches another person, and whether it touches internal data or client and regulated data. Searching one's own project mail is the low-risk corner. Pulling up a client's attachment stays with the employee but carries client data, so it waits on Apple's answer about processing. A reminder to a colleague reaches someone else with internal data, and a required confirmation before sending covers it. Email or invites to a client combine both risks. That corner stays off until confirmation behaviour and admin controls have been checked on a managed test device.
What to watch
- Apple's iOS 27 deployment documentation, and whether device-management tools can limit Siri's access to managed Mail and Calendar accounts.
- Hands-on reports from managed devices on whether Siri sends email and calendar invites itself or waits for the user to confirm.
- Any statement from Apple on whether Siri's mail and calendar requests are processed on the iPhone or on its servers.