Check whether universal inbox is on (Settings). Force refresh (button at top of Inbox page). If sync is running and replies still don't appear, the reply may not have arrived — check per-mailbox view for the specific inbox. If it's not there either, the reply hit spam or didn't send at all.
Diagnosis
1. Check that universal inbox is on. Settings → Preferences.
2. Force refresh. Refresh button at the top of the Inbox page. If new messages appear, sync was just behind.
3. Try per-mailbox view. Open the specific mailbox on Email Users → Inbox tab. This queries IMAP live, bypassing universal inbox's sync cadence.
4. Verify the reply exists. If per-mailbox view also doesn't show it, the reply may not have been delivered. Check with the person who sent it — they may have drafted but not sent, or the reply hit spam on the recipient side.
5. Check IMAP auth. If universal inbox says "sync error" for a specific mailbox, rotate the password (Email Users → Rotate) and re-check. Password mismatch at IMAP is a common silent failure.
When replies actually don't arrive
- Reply hit spam at recipient side. Rare but happens — if your original cold email has an unusual reply-to configuration, replies can get flagged. Check your reply-to isn't set to a different domain.
- Reply-to redirected. If someone replied to a forwarded address (like your Gmail via catch-all forwarding), it goes to your Gmail, not the Winnr mailbox. Check there.
- DKIM alignment issue. Rare — if your DMARC is strict and DKIM alignment is off, some providers hold replies. See DNS health.
What's next
Frequently asked questions
How fast should replies appear?
Universal inbox — up to 15 minutes (sync cadence). Per-mailbox view — live (queries IMAP immediately).
I know someone replied. Where is it?
1) Force refresh the inbox. 2) Check per-mailbox view for the specific mailbox. 3) If still missing, check the recipient's Sent folder to confirm they actually sent it. Sometimes a "reply" is drafted but never sent.
Universal inbox stopped working after I rotated a password.
IMAP auth now fails with the new password. Winnr should detect this within an hour. If it doesn't, contact support.
What if it's syncing but only some replies show?
Some sending tools mark messages as "read" via IMAP. Winnr's universal inbox may filter based on that. Try the per-mailbox view — it shows all messages regardless.