How to unify Sent folders between Roundcube and Outlook without losing IMAP history

Multiple sent folders (Sent, Sent Items, Enviados) create fragmented history and support issues. This is the safe consolidation process I use.

Root cause

Different clients and locales create different sent-folder mappings.

Standardization workflow

1. define one canonical sent folder on server (Enviados);
2. move old messages from duplicate folders;
3. map Outlook explicitly to the canonical folder;
4. validate send behavior from web, desktop, and mobile.

Validation checklist

• all clients save into same folder;
• no new duplicate sent folders;
• historical search returns unified timeline.

Final takeaway

Sent-folder standardization is a low-effort, high-impact fix for IMAP consistency and operational support quality.

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