Hello, I have emclient set up with our company emails, and we now have over 145,000 emails.
Syncing a new installation of emclient takes an extremely long time. Even when new events and emails come in or go out, it takes forever.
I’ve had the sync running for 2 hours and only 139 emails have been synced. Unfortunately, I can’t work like this. We need help.
I’ve had the sync running for 2 hours and only 139 emails have been synced. Unfortunately, I can’t work like this.
That’s not normal to be slow like that with eM Client, and could be related to “mail server settings possibly incorrect”, or “could be an actual Google Gmail mail server problem” or “could be a resident program running in the background” on computer startup slowing it.
So first check with Google technical support either via phone or website if they are experiencing any connection / speed issues atm as it could be an actual Google problem as @kurt found below and which fixed itself today.
Next if Google don’t have any current connection / speed issues atm, then go to “Menu / Accounts” and click your Gmail account “IMAP tab” and update what your “Server address, Server Port and Security Policy” is, so we can then check for any possible errors in the server settings.
Also under IMAP “Sync Options” further down screenshot what you have set there so we can check if there is any obvious settings wrong.
Lastly if you have any eg: “optionally installed firewall security program” or “optionally installed antivirus program” or “vpn” other than what comes default with your OS, then try completely disable those to test incase of interference.
I had the same problem for the past few days… the synchronization of emails from the Gmail IMAP server took forever – even though there were only 20 emails to sync.
The synchronization of contacts and calendar worked as usual, in fractions of a second – as did the synchronization of POP3 accounts and non-Gmail IMAP servers.
I experienced the slow Gmail IMAP synchronization problem on two different (Windows 11) PCs.
However, the problem disappeared today, without me having made any changes.
So it seems likely that there was a problem with Gmail… ???
Or was it one of those rare cases of self-healing?
Kurt
not to hijack this thread, but i’ve been wrestling with this exact issue for the last 4 days.
Migrating to emClient from other apps. Mac runs sweet as a nut, iOS Ipad M2 Pro and iPhone 15 Pro Max laaaaaaaaggy… have the latest app versions and iOS 26.2 on both.
Regular IMAP accounts sync hundreds of messages a minute, Gmail maybe 5. I have an account with 10k messages, left the app open and iPad running overnight, sync’d about 2.5k messages over 8 hours. Removed that account, re-added it - same slow sync.
No AV or VPN on these, i even turned off private relay to no avail.
Whats a little weird is new messages come through right away, its sync’ing all the old emails thats the issue.
Can you please enable IMAP logs for the affected Gmail account (Settings - Account - IMAP - Scroll down to ‘Enable diagnostic logs’) and send them to us for analysis?
After you enable the logs, please restart the app and after you notice slowness/new messages loading poorly, send the created logs (Settings - Help & Feedback - Send logs) and the details on your app version/device to [email protected] so our team can look into it.
Thank you for your cooperation!
done thanks. I’ll wait to hear from them.
I am experiencing the same issue here. I have setup em client to connect to gmail. I have 170000+ messages. I have the sync running on both a Windows 11 PC and Macbook for the last week. I have still not downloaded all the emails - around 25000 on PC and 50000 on Macbook. My internet broadband connection is fast. I have no problem accessing / receiving / sending email through the gmail web client.
There also appears to be gaps in the email history - for example so far I have nothing on the MacBook from the week of 26 Jan, but those emails do appear on the Windows PC.
As others have reported, the EM Client connected to other IMAP providers is very fast.
I did previously send the logs (early last week), but got no response from anyone.
Thanks
Chris
Chris, where did you send it please? And could you DM me the email address you used to send it?
It was sent ot [email protected]. Let me know if you want me to send latest.
Slow Gmail IMAP message downloading synching “apart from any possible incorrect eM Client mail account settings or possible resident background programs interference” etc can sometimes also be related to eg: Gmail Throttling policy as @Michal_Burger advised in his post below.
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I have a variant of this topic. My Macbook installation of eM Client (but not the iPhone mobile version) often shows Operations Errors on two accounts that run off Gmail servers. In the latest case, yesterday at 6:11 am, the message reads, “Gmail: An error occured. (Google Calendar) Synchronizing folder list failed due to the following error: net_http_request_timedbout, 100”. A second account on the Princeton (University) network that runs off a Google server said the exact same message. On my MacBook and iPhone I have setup Google Calendar syned with the Apple Calendar. Is this a known vulnerability? Thanks for help. I do not work at Princeton, but I have a personal account on the alumni network. I am retired and use my personal computer and iphone at home, but not at a workplace.
Provided you are using a recent eM Client Mac version 9 or 10 which you can check via the release history page and your Mac OS is “one of the last 3 OS versions” and is up to date, Google timeouts like that trying to reach / sync to the Gmail servers is usually related either “the physical internet connection” taking to long to connect to the mail server or “something running resident” interfering with the client & delaying it.
So first thing “check your internet connection speed to make sure that hasn’t slowed” as it might have unexpectedly which then can affect mail connections and timeouts.
I’d recommend (if you haven’t already) to eg: power off your wifi modem and computer and any switches etc for 2 mins and then power back on and see if that makes any difference, as could be an old stale IP address and need renewing.
Also “if you are using alternative DNS servers”, like eg: cloudfare or other etc, try changing back to your default ISP connection auto assigned DNS server addresses to see if that makes any difference.
If that makes no difference then as mentioned further up this thread “if you are running any optionally installed firewall / security programs or optionally installed antivirus programs or vpns”, (other than what comes default with your os) then try completely disabling those to test.
Thanks. The last paragraph of your reply reminds me that my occasional employer has installed some security software as condition of accessing their network. I can’t remove that. In the “App background activity” under Settings > General, the following programs are active but have notation, “this setting has been configured by a profile,” and cannot be manually tweaked to inactive by me: “bash” (twice), Cisco Secure Client, CrowdStrike Inc, JAMF Self Service, JAMF Software, log, Nudge.
My MacBook also runs three other desktop mail clients, MS Outlook, Apple Mail, and GMAIL, none of which has ever shown these errors that appear only from eM Client.
For what it may (or may not be) worth, the online service “highspeedinternet.com” rates my MacBook’s download at 585mbps and upload at 600mbps.
Stanford University, has installed some security software as condition of accessing the University’s network. I can’t remove that
It could well be then that security software may be interfering with eM Client and causing the timeouts.
My MacBook also runs three other desktop mail clients, MS Outlook, Apple Mail, and GMAIL
Some universities “don’t allow certain clients” or “are fussy about the clients people use” through them.so can then have issues accessing.
I would suggest then to “contact your Stanford University IT technical support” (if you haven’t already) and tell them “you want to use eM Client” to see if eM Client can be allowed through the security program and let them know you are getting those Google net_http_request_timedbout, 100”.
They can also test the latest eM Client their end “with the automatic setup” with the following Port and Security Policys with Gmail in either V9 or V10 to see if they also experience the same issue.
Check you also have those same mail settings via “Menu / Accounts”.
eM Client V10.3 or higher
(IMAP)
Server address imap.gmail.com
Port 993 "Use TLS on Special Port”
eM Client V6 to V10.2
(IMAP)
Server address imap.gmail.com
Port 993 Use SSL/TLS on special port (legacy
Yes, you’re right about the Stanford IT people being very restrictive about email clients. I tried using Spark made in Ukraine, but it couldn’t setup a Stanford mail account, although it worked perfectly with my Gmail and iCloud mail. But in this case, the problem on cM Client is apparently not with the Stanford account, but only with Google server accounts.
My eM Client is ver 10.4, the IMAP uses port 993 and “Use TLS on Special Port” is entered in the “SecurityPolicy” line.
Message sync time period is set to “All time,”
Under the “Google Calendar” heading, the “Events” option “Disabe HTML format in Description” is not checked.
Under the “Diagnostics” heading, none of the four logs is enabled: IMAP, SMTP, Google Contacts, Google Calendar. And under the “Advance Options” no parameters are set.
But in this case, the problem on cM Client is apparently not with the Stanford account, but only with Google server accounts
If you still have that Stanford security software installed and carnt be disabled as you advised above, then that might be the issue.
So it would “have to be disabled to test” if your Google acct then works ok with eM Client.
I can call the IT service desk to ask their view of eM Client. If, as I expect, they don’t welcome it, I’ll drop the matter. If they accept it, then I’ll see if they will try disabling the security stuff. But doing that could be VERY time-consuming, since at least four different programs are involved. My work does not depend on this matter; it’s annoying but not really disabling to the activities that I do.
Maybe a solution can be found at the Gmail site?
Yes it’s the only way to know if that’s causing it. If it then works with it all completely disabled, then ask them how to configure it to allow eM Client.
My guess is that, at that stage, they would simply pass the buck to Google and send me off to start in all over at the Gmail site.
And why doesn’t eM Client on my iPhone show the same error? The iPhone is also in full compliance with Stanford’s security requirements.
I’ll sleep on this now and see if the next day brings better results.
I had a variant of this issue where the messages slowly synced up to a point and then stopped altogether. It was solved based on @Michal_Burger 's info by checking the user’s page in the google admin console and un-suspending the user for going over Google’s bandwidth limit. On that user’s main page on the admin console, there was a large red banner at the top indicating that they were suspended along with a reset button. After unsuspending, the messages started flowing again within 2 minutes.