Check email and calendar
Mail account and synchronisation
- Open Profile → Mail accounts and check the state and latest synchronisation.
- Confirm with the provider that OAuth consent, app password or IMAP/SMTP access is valid.
- Check folder placement, sender, recipient format and attachment size.
- Compare Drafts, Outbox and Sent before sending again.
- For delays, record the account, folder, time and synchronisation direction.
Common causes include expired provider consent, changed passwords, renamed folders, provider limits, background processing or missing permission on a shared mailbox.
Calendar and invitations
- Check timezone, start, end, recurrence rule and connected account together.
- For a missing invitation, inspect the recipient address, sending state and spam filter.
- A series change may affect one appointment or the complete series; check the selection before saving.
- Do not delete duplicate appointments until their source and synchronisation direction are clear.
Retry safely
Sending and appointment creation are write operations. Before retrying, first check whether the provider already completed the operation. Never send complete mailbox exports or credentials as diagnostic attachments.
Continue with Email and mail accounts and Calendar and appointments.