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Outlook classic is really slow sending and receiving emails. it can take 15-20 minutes at time for an email to leave the outbox. It's also slow synchronizing folders. what's the problem?
Using Classic Outlook on Windows for personal email, calendar, and contact management
Hello,
Please click "Send/Receive" at the top, then select "Show Progress."
Please provide a screenshot of this.
Please make sure to mask any private or personal information. Thank you.
Based on the screenshot, Outlook is stuck on "Synchronizing." The sending process hasn't actually failed completely; instead, the synchronization of a specific mailbox or folder is slowing down the entire Send/Receive queue, causing the program to hang for 10–20 minutes.
I suggest the following:
Press the Win + R keys and enter: %localappdata%\Microsoft\Outlook
Locate the file with the .ost extension (usually named after your email account).
Delete this .ost file or simply rename it (renaming—e.g., to .old—is safer).
Restart Outlook; it will automatically re-download your mailbox data and generate a new OST file.
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I find this incredibly helpful...my Outlook Data File is 2.7 Gigs and takes a long time to send/receive....what can keep this file from getting so big?
@Dan Stock said
my Outlook Data File is 2.7 Gigs and takes a long time to send/receive
I understand that you have the same or similar issue to the one discussed in this thread. But you will probably not get any help by adding to an old post.
I would suggest that you start a new thread using the "Ask a question" button at the top of this page to create a new Question and include the details for your specific problem and what steps you have already tried to fix it.
This provides much higher visibility to your issue than adding on to an existing post, which is only seen by people who are already following this question.
(You can put the link for this page in your new Question for reference)