iPhone mail app is not syncing sub folders with New Outlook on my PC.

Question

iPhone mail app is not syncing sub folders with New Outlook on my PC.

Rita Keeling 0

iPhone mail app is not syncing sub folders with New Outlook on my PC and vice versa. My mail account is through Xfinity. The folders are syncing when I log into Xfinity Webmail. The rest of my mail seems to sync just fine. It's the subfolders that are not

Rita Keeling 0 Reputation points

2026-02-16T22:25:26.9433333+00:00

Going through the checklist, how do you check to see if subfolders are subscribed
Mukesh D 30 Reputation points

2026-02-18T01:05:19.8166667+00:00
It looks like your iPhone Mail app and Outlook on your PC aren’t syncing the Xfinity subfolders, even though they show up fine in Xfinity Webmail. This usually happens when the mail apps aren’t set to sync all folders.

On your iPhone, go to Settings → Mail → Accounts → your Xfinity account → make sure all folders are set to sync.

In Outlook on your PC, right-click your account → IMAP folders (or Folder → IMAP folders) → click “Query” and then “Subscribe” to any missing folders.

Double-check that both devices are using IMAP, not POP. IMAP keeps everything synced across devices.

If it still doesn’t work, try removing the account from one device and adding it again. This often forces all folders to sync properly.
Rita Keeling 0 Reputation points

2026-02-18T13:17:35.81+00:00

First step. HOW do I "make sure all folders are set to sync" on my Iphone. The steps given, there is no way to check that.

Second Step. In Classic Outlook, I can see the subscribed folders but I cannot view them in New Outlook. Maybe I should just convert back to Classic Outlook. Seems to be a New Outlook issue.

Third Step. Yes, both devices are using IMAP.

Fourth Step. I don't want to remove accounts because, like I said, I can view these folders in Classic Outook just not New Outlook.

3 answers

Your answer

Rita Keeling 0 Reputation points

2026-02-16T22:25:26.9433333+00:00

Going through the checklist, how do you check to see if subfolders are subscribed
Mukesh D 30 Reputation points

2026-02-18T01:05:19.8166667+00:00

It looks like your iPhone Mail app and Outlook on your PC aren’t syncing the Xfinity subfolders, even though they show up fine in Xfinity Webmail. This usually happens when the mail apps aren’t set to sync all folders.

On your iPhone, go to Settings → Mail → Accounts → your Xfinity account → make sure all folders are set to sync.

In Outlook on your PC, right-click your account → IMAP folders (or Folder → IMAP folders) → click “Query” and then “Subscribe” to any missing folders.

Double-check that both devices are using IMAP, not POP. IMAP keeps everything synced across devices.

If it still doesn’t work, try removing the account from one device and adding it again. This often forces all folders to sync properly.
Rita Keeling 0 Reputation points

2026-02-18T13:17:35.81+00:00

First step. HOW do I "make sure all folders are set to sync" on my Iphone. The steps given, there is no way to check that.

Second Step. In Classic Outlook, I can see the subscribed folders but I cannot view them in New Outlook. Maybe I should just convert back to Classic Outlook. Seems to be a New Outlook issue.

Third Step. Yes, both devices are using IMAP.

Fourth Step. I don't want to remove accounts because, like I said, I can view these folders in Classic Outook just not New Outlook.

Answer 1

Alice-N 7,485 Microsoft External Staff Moderator

Hi Rita Keeling

I hope you are doing well ! I just want to check if you have had a chance to test the steps earlier? Please let me know if they helped resolve the issue or if you are still experiencing any difficulties. I am here to assist you further.

Best Regards

Rita Keeling 0 Reputation points

2026-02-18T13:13:31.7866667+00:00

Going through the checklist, how do you check to see if subfolders are subscribed
Alice-N 7,485 Reputation points Microsoft External Staff Moderator

2026-02-19T07:25:48.82+00:00

Hello Rita Keeling ,

Thank you for your follow-up. To check whether subfolders are subscribed in Outlook (classic): in the folder pane, right‑click the top folder of your IMAP account, select IMAP Folders, select Query, then select the missing subfolders and choose Subscribe. If a folder was created in webmail and doesn’t appear, right‑click the top folder again and choose Update Folder List, then repeat Query/Subscribe.

If you can see the subfolders in classic Outlook but not in the new Outlook, I suggested to keep using classic Outlook as your reliable alternative for now while the new Outlook catches up for IMAP folder visibility.

Thank you for your understanding and cooperation.
Rita Keeling 0 Reputation points

2026-02-19T13:47:33.2566667+00:00

Thank you, I am just going to use Classic Outlook for now. It seems to be showing all of my subfolders.
Alice-N 7,485 Reputation points Microsoft External Staff Moderator

2026-02-20T01:51:58.57+00:00

Thank you Rita Keeling, Please stick with Classic Outlook for now. If you find the Answer helpful, please mark it as Marked Answer so that it could help other users in the community too!

Have a nice day

Answer 2

Dear Rita Keeling

Thank you for reaching out to the Microsoft Q&A forum. I understand you are having a problem with iPhone Mail not syncing IMAP subfolders with the new Outlook on Windows (Xfinity/Comcast email). I am happy to assist you.

With Xfinity, full folder sync across devices requires IMAP (not POP). IMAP keeps folders and mail on the server so changes reflect across devices. This usually occurs when the subfolders are not subscribed/visible in the email client that’s missing them. Please try these steps:

Confirm the iPhone account is IMAP. IMAP is recommended for syncing mail across multiple devices, while POP can cause multi-device sync problems. If the iPhone account was added as POP previously, re-add it as IMAP.
On the PC, subscribe the missing IMAP folders. In Outlook, you can download the IMAP folder list and subscribe to the folders you want shown/synced: Right‑click the top folder of the IMAP account in the folder pane > IMAP Folders > Query > select the missing folders > Subscribe. If a folder was created in webmail and doesn’t appear, use: right‑click the IMAP account > Update Folder List, then Query/Subscribe again. If your top‑level IMAP folder name starts with a number (0–9), Outlook may block these IMAP folder steps.
If you can’t manage IMAP subscriptions from the “new Outlook” UI. You can switch between new Outlook and classic Outlook and run them side‑by‑side; if you need IMAP folder subscription controls, use classic Outlook to do the IMAP Folders Query/Subscribe step, then return to new Outlook.

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Answer 3

If your iPhone mail app is not syncing subfolders with the New Outlook on your PC, there are a few potential causes and solutions you can consider:

IMAP Configuration: Ensure that your email account is set up using IMAP rather than POP. IMAP is designed to sync folders across devices, while POP typically downloads emails to a single device.
Folder Subscription: Check if the subfolders are subscribed in your email settings. Sometimes, not all folders are set to sync by default. You can usually manage this in the settings of your email account on your iPhone.
Sync Settings: Verify the sync settings on both your iPhone and New Outlook. Make sure that both are configured to sync all folders, including subfolders.
Update Applications: Ensure that both the iPhone mail app and New Outlook are updated to the latest versions. Sometimes, syncing issues can be resolved with updates that fix bugs or improve functionality.
Restart Devices: A simple restart of both your iPhone and your PC can sometimes resolve temporary syncing issues.
Check Xfinity Settings: Since your account is through Xfinity, log into Xfinity Webmail and check if there are any settings related to folder syncing or IMAP access that need to be adjusted.

If the issue persists after trying these steps, you may want to contact Xfinity support for further assistance, as they can provide specific guidance related to their email service.

References:

Rita Keeling 0 Reputation points

2026-02-16T22:26:15.3833333+00:00

Going through the checklist, how do you check to see if subfolders are subscribed

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iPhone mail app is not syncing sub folders with New Outlook on my PC.

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