topic Excel not displaying in outgoing mail preview pane in Discussions https://connect.mozilla.org/t5/discussions/excel-not-displaying-in-outgoing-mail-preview-pane/m-p/133458#M53610 <P>Hi. I am S. Mahadeven. While attaching an excel worksheet in the outgoing mail in thunderbird, previously excel files displayed in the preview pane. But for the last month or so, excel files are not displaying in the preview pane of outgoing mail. How to resolve this? Kindly help</P> Fri, 31 Jul 2026 06:25:14 GMT Mahadeven 2026-07-31T06:25:14Z Excel not displaying in outgoing mail preview pane https://connect.mozilla.org/t5/discussions/excel-not-displaying-in-outgoing-mail-preview-pane/m-p/133458#M53610 <P>Hi. I am S. Mahadeven. While attaching an excel worksheet in the outgoing mail in thunderbird, previously excel files displayed in the preview pane. But for the last month or so, excel files are not displaying in the preview pane of outgoing mail. How to resolve this? Kindly help</P> Fri, 31 Jul 2026 06:25:14 GMT https://connect.mozilla.org/t5/discussions/excel-not-displaying-in-outgoing-mail-preview-pane/m-p/133458#M53610 Mahadeven 2026-07-31T06:25:14Z