Outlook 365 send/receive takes FOREVER - as in 40 minutes

C

cw89134

New Member
OS Version(s)
  1. Windows
Outlook version
Outlook 365 64 bit
Email Account
IMAP
Operating system::    Win 11
Outlook version:     Outlook 365
Email type or host:    IMAP - to Gmail account
I have Googled this, run it through CoPilot and have tried all suggestions. I don't want to give up on Outlook but I am very frustrated. Any suggestions that have worked for others would be greatly appreciated. Thanks in advance.
 
outlook send receive.jpg
 
1) Read thru Diane's:

Slipstick article
Configure Gmail Accounts in Outlook | Slipstick Systems

And her answer in this Answers thread
Redirecting

2) Try reducing the number of GMail Folders (Labels) you subscribe to in Outlook to just your Inbox. Does this bring the time down? If so, then re-subscribe to the others one-at-a-time and see who's causing the problems.

3) Run SCANPST on any local files. Always check "Make backup ... before repairing"!
Repair Outlook Data Files (.pst and .ost) - Microsoft Support
 
Thanks for the reply. This morning (I shut the PC down every night), the sync is working normally (i.e. it takes seconds, not minutes). My experience over the past few days is that the sync performance degrades as the day goes on. I try to keep Outlook open as much as I can. I will post here if the sync performance degrades. Thanks again.
 
I am still troubleshooting this. I checked with Copilot. Copilot offered the following suggestion. This was new. I had not set the Root folder path before today.
1751995794800.png

I just tried this and will report on progress (or lack thereof) when there is something to report.
 
No on setting a root path for Gmail. Only use it for the few IMAP server that recommend it.


One option I recommend is changing the sync settings so Outlook only checks the inbox. If you only use Outlook to read mail and don't use rules on the server to file mail, you don't need to check unread count for all folders. The folders will sync when you open them.

Open Send/Receive settings (Ctrl+Alt+S) then select the send and receive group at the top and click Edit.
Select the IMAP account on the left.
Uncheck Get folder unread count for subscribed folders
Select Use the custom behavior defined below
Select only Inbox, Sent, and Trash.

This should speed it up quite a bit.

Note: The send/receive time in Send/Receive Group settings (Ctrl+Alt+S) dialog should be at least 5 min, especially if using Send Immediately for outgoing mail. When you open an IMAP folder Outlook will check that folder for new mail.

The option for "Send immediately when connected" is in File > Options > Advanced. It's about halfway down in the Send and receive group.
 
Thank you for your reply. I had tried a number of things before I settled on the root path solution (That has sped things up quite a bit). I believe I had tried the solution you outline, namely to only check the Inbox.

May I ask why you don't recommend the root path solution.

BTW, I do have Outlook rules to file mail in various folders in the pst file.

Thanks again for the reply.
 
Thanks for the reply. This morning (I shut the PC down every night), the sync is working normally (i.e. it takes seconds, not minutes). My experience over the past few days is that the sync performance degrades as the day goes on. I try to keep Outlook open as much as I can. I’ll post here if the sync performance degrades. Thanks again
 
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