Mail slow to open messages

I'm running a Core Duo MacBook Pro, 2GB RAM, OS X 10.5.5.
Recently (and I'm not sure if this followed an update or not), I've been having serious lack-of-speed issues with Mail. When I open a message, the window pops up immediately, followed quickly (sometimes a slight delay but usually not a perceptible one) by the headers. It then takes about 40-45 seconds (counting to 40-one-thousand, haven't used a stopwatch) for the message body to come up.
This happens with emails from both POP and IMAP accounts, in both my inbox as well as "normal" folders on my Mac. I do have a decent number of accounts (some POP, some IMAP) and a whole lot of mail saved on my Mac, but that's been true since before I started having this problem.
I've tried rebuilding a mailbox, and it didn't ameliorate the problem.
Any other thoughts appreciated.

I am a heavy email user - 100 to 200 emails a day sometimes. My Apple Mail was so slow that I got in the habit of clicking on an email and then going to another application to keep working and check back from time to time to see the email opened. I'd then read it, click on another and repeat the process. a serious drag on productivity. I came across this tip on another site and it worked very well for me. Not sure how long it will last.
Here is the link:
http://danwarne.com/is-apple-mail-running-slow-speed-it-up/
Here is the meat of the post:
+You can check your current 'envelope archive' size by entering this in the terminal:+
+ls -lah ~/Library/Mail/Envelope\ Index+
+Then to optimise it (cleans out stuff that has been marked for deletion but not actually deleted, defragments the structure, etc):+
+sqlite3 ~/Library/Mail/Envelope\ Index vacuum;+
+Then check your envelope archive size again to see the results…+
+ls -lah ~/Library/Mail/Envelope\ Index+
+It compacted my envelope archive down from 55MB to 50MB — not a huge increase, but the speed difference was dramatic.+

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IPhone Slow to Open Messages

We have roughly 80 iPhones deployed all tied to Exchange 2003. These are mostly iPhone 4 and about 10 iPhone 4S units. We have one iPhone 4S which is problematic. It is running IOS 5.0.1 (as most of them are) and opens e-mail very slowly. By open I don't mean pulls down from server. It's in the list of items, you click it, and it's very slow to open. We decided to erase the iPhone and then restore. Same issue. We then placed the phone in recovery mode, and restored. Same thing. I then took an iPhone 4, erased and loaded a fresh copy of IOS 5.0.1. Activated e-mail only (no restore pulling in data to eliminate any apps or other items that might be causing the issue) and the same thing occurs. We tested both over Wifi and 3G and same result. This caused me to believe there must be something wrong with the individuals Exchange mailbox. My next move was to have them move everything out of their mailbox to an archive eliminating a high e-mail count in the mailbox. Still the same issue. Oddly, the same person has an first gen iPad, configured the same way and it open the emails very quickly which would then basically rule out the Exchange e-mail account. Anyone have some ideas?

I have been fighting the same thing for many moons. My Exchange provider has no clue. I upgraded my 3 GS to IOs 5 and this is what happened. I subsequently got a 4S (iOS 5.x), same trouble.
The provider had me change the server I connect to. After it all resyncs, I'll see if it's better. If not, I am going to disable Activesync on the server, and then re-provision it and start over. Don't know what to do after that. Gmail works fine.
My provider said it was a known issue with iOS 5 and it is the fault of Microsoft's activesync serever software. To my knowledge they have been unable to get a patch from Microsoft. My iPad works fine 99% of the time. And what is stranger, other users in my organization have no issues. Weird.

N96 So Slow to open messages and send

Please Help
Had p[hone since November and sometimes applications are slow to start but generally excellent phone till today ARRRGGHHH!
The phone just hung in "No Mans Land" several times so took out battery, sim card and emptied all texts (appx 500). Will open messaging now but topen a message takes about two minutes!
Any ideas please?
Solved!
Go to Solution.

Hi Barry,
I can suggest is a firmware update, if you are not already on the latest which is 12.043. If you are already on the latest version you could try a reset. Before you reset you will need to backup your phone because the reset could wipe out all your data. Try the following resets, the first and then the second if the first does not work.
Always remember to backup your phone before performing resets as your data may be lost.
First try these
*#7780# - Restore factory settings - resets all the settings to the default
*#7370# - Reformat your phone
Personally I'd leave it for a few days to see if the problem resolves itself before I attempt the resets, which can be a bit of a pain.

Mail shows last opened messages as unread on next download

I am using Mail v6.5 under ML and a very irritating thing now happening is that messages I have recently opened and read then appear in bold type in the message window as unread when I get my new mail.
This happens even though Mail is still open on my desktop when the Mini is in sleep mode overnight and I open it the next day.

The emails are basically unread as fasr as Mail is concerned. You can mark them all as read by going to the edit menu and selecting all then control clicking one of them and choosing mark as read.

Mail Slow, re-downloading messages

Mail has worked very well for me for quite some time---but over the last week or so I've been having a lot of problems.
Symptoms:
When I open mail I typically see only messages that came in 2 or 10 or 24 hours ago. Very slowly more recent messages will start to show up.
Often it will take a long time for the contents of a message to download when I open a message.
Sometimes all my mail for two or three months will disappear, then slowly come back.
The Mail Activity window usually shows messages downloading, often stalled.
The symptoms are similar for both machines. I've used the MacBook on different ISPs with similar symptoms.
Here's the setup:
I have a Mini and a MacBook, both running 10.5.2.
I use Sync for Mail rules, signatures, smart mailboxes--but not for the accounts themselves.
I have four email accounts---three POP accounts and a Gmail account I have set up as an IMAP account.
The POP accounts all forward to the Gmail account.
The IMAP account is the only one setup to check messages automatically. The others are only there so I can send using those account details.
Mail is set to download messages for offline viewing.
I have tried: repairing permissions, deleting mail preferences, adding DNS settings and doing an archive and install on the MacBook. Nothing has worked.
Any ideas?

I think I've figured out the problem, but haven't solved it. Gmail has a problem that will cause both the client AND web based mail to slow down dramatically if you are using an IMAP client. I have been using Apple mail to check my IMAP mail at Gmail---and that's the problem. If first developed in mid February and you can read all about it here:
http://groups.google.com/group/Gmail-Help-sending-and-receiving/browse_thread/th read/735cfc21752d2036/8251caceca093903
Message was edited by: Willy Ritch-Smith

Hyperlinks from mail slow to open

Whenever a hyperlink in mail is selected mail goes into a 'Not responding' mode for 45 to 50 seconds before opening. Mail will then continue to work normally until another hyperlink is selected.

Thanks for your reply ...
Desktop ... 107G free 160G drive
Laptop ... 30G free 60G drive
I'm not sure how to tell what the size of my largest Mailbox is, but it has about 130 messages.
Unless some cron script or other utility rebuilds mailboxes, never. I just rebuilt them and will keep you up to date.
Again,
Thanks ... G

Mail will not open message viewer or drafts

Hello. I work on a 27" IMac 2.66 GHz 8 GB 1067 MHz DDR3, running Mavericks 10.9.5. Since installing the latest update mac mail has been running VERY slowly, even lagging substantially as I type. Then in the last couple of days it has seemingly launched but no windows, no message viewer are visible. I can quit it or force quit or restart the computer but it still will not open any windows. I tried shutting off iCloud mail sharing yesterday and lo and behold it worked again. But today although iCloud mail remains shut off it will not open. I have opened the console and here are the recent messages:
(it seems to suggest I am out of cpu space? of a 1TB SATA disk I have 387.21 GB free of 999.35
Your assistance in fixing this will be greatly appreciated. Thank you.
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10/10/14 1:05:51.949 PM com.apple.SecurityServer[14]: Session 100023 created
10/10/14 1:05:52.517 PM Mail[756]: The layout constraints still need update after calling -[MUIAddressField updateConstraints]. MUIAddressField or one of its superclasses may have overridden -updateConstraints without calling super. Or, something may have dirtied layout constraints in the middle of updating them. Both are programming errors.
10/10/14 1:05:52.918 PM WindowServer[190]: common_reenable_update: UI updates were finally reenabled by application "Mail" after 2.68 seconds (server forcibly re-enabled them after 1.00 seconds)
10/10/14 1:08:10.085 PM com.apple.backupd[725]: Found 2371 files (1.23 GB) needing backup
10/10/14 1:08:11.000 PM com.apple.backupd[725]: 2.39 GB required (including padding), 12.71 GB available
10/10/14 1:08:41.000 PM kernel[0]: process Mail[756] thread 27827 caught burning CPU! It used more than 50% CPU (Actual recent usage: 51%) over 180 seconds. thread lifetime cpu usage 90.223218 seconds, (88.660322 user, 1.562896 system) ledger info: balance: 90001796449 credit: 90001796449 debit: 0 limit: 90000000000 (50%) period: 180000000000 time since last refill (ns): 173696420474
10/10/14 1:08:41.865 PM ReportCrash[779]: Invoking spindump for pid=756 thread=27827 percent_cpu=51 duration=177 because of excessive cpu utilization
10/10/14 1:08:46.717 PM spindump[780]: Saved cpu_resource.spin report for Mail version 7.3 (1878.6) to /Library/Logs/DiagnosticReports/Mail_2014-10-10-130846_Rachael-Millers-iMac.cpu _resource.spin
10/10/14 1:08:53.843 PM com.apple.SecurityServer[14]: Session 100011 created
10/10/14 1:08:53.843 PM com.apple.SecurityServer[14]: Session 100024 created
10/10/14 1:10:04.098 PM com.apple.backupd-helper[59]: Not starting scheduled Time Machine backup: Backup already running
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10/10/14 1:12:05.990 PM mdworker[793]: CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary on line 1. Parsing will be abandoned. Break on _CFPropertyListMissingSemicolon to debug.
10/10/14 1:12:05.990 PM mdworker[792]: CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary on line 1. Parsing will be abandoned. Break on _CFPropertyListMissingSemicolon to debug.
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10/10/14 1:13:01.539 PM com.apple.backupd[725]: Will copy (9.2 MB) from Macintosh HD
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Back up all data before proceeding.
1. Triple-click anywhere in the line below on this page to select it:
~/Library/Mail/Bundles
Right-click or control-click the highlighted line and select
          Services ▹ Open
from the contextual menu.* A folder may open, or you may get an error message that the item can't be found. Either result is normal. If the folder does open and has contents, move the contents to the Desktop. Relaunch Mail and test. If there's no change, put the contents of the folder back and quit Mail again.
2. Repeat with this line:
/Library/Mail/Bundles
This time you may be prompted for your administrator login password when you remove the items. Make sure they're removed from the folder and not just copied to the Desktop. If necessary, copy them first and then move the originals to the Trash.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.

HT1146 can't preview messages at bottom of mail viewer before opening message

for some reason, the message preview box at the bottom portion of Mail is not working anymore so I have to open each message to read them instead of being able to glance at each one through the preview box. what to do to restore preview box?

Hi Granetta,
Try this - worked for me
http://ask.metafilter.com/90752/how-to-restore-preview-pane-in-Leopard-mailapp
Glenn

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I am running Mac OS X 10.8.2 on a new (mid 2012) MacBook Air 11 inch.
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Check these links:
Maximize memory and battery life
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Perhaps these article may help you to resolve your issue.
if your issue solved set "Solution" mark at the relevant post

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The only thing different since yesterday morning is that I decided to turn off File Vault --that process took all day but finally finished and that's when I ran into problems with mail.
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''SuperSluether [[#answer-671002|said]]''
<blockquote>
Is this problem in Firefox? It sounds as if you are referring to an email program such as Apple Mail or Mozilla Thunderbird. As far as I know, you can't open emails in Firefox with File > Open Message because there is no such option.
</blockquote>
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I have an iMac, running x10.5. My email is very slow, even opening a previously downloaded message. The computer is otherwise fast. What gives?

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Go to your User's Library folder. (if you don't know how to find, see this link.)
Scroll to Mail folder.
Select the V2 > MailData folder.
Delete any files in MailData with envelope in the name. (should be 3)
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Mail slow to open messages

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