Fact · Dictation in your apps
Microsoft says dictation in Outlook is speech-to-text that needs a microphone and a reliable internet connection.
Checked against its source on October 17, 2026
In the source's own words
“Dictation in Outlook lets you use speech-to-text to author content with a microphone and reliable internet connection”
Dictate your emails in Outlook (Microsoft Support), Microsoft, Microsoft Support, 2026, Opening paragraph, dictation overview.
Open the original- What it measures
- Microsoft gives the same requirement in its troubleshooting steps, which ask you to make sure you are on a fast and reliable internet connection.
- What it does not show
- The page does not say how much data dictation uses or whether any part works offline.