Mail to calendar links not working

Same here. Have to go back and try to find the email with the same subject.

Me too. What I'm seeing is that iCal isn't following its Mail links at all - when I hover over older links I see a "message" URL that is obviously wrong.

I hope this is just iCal reading its database wrong - if upgrading to Yosemite broke all my iCal -> Mail links, I'm going to be VERY angry.

I just checked my calendar entries using iCloud in the browser. It shows the url: field which is where the "Show in Mail..." link is stored in the cloud, and the browser Calendar shows a completely different URL than the Calendar desktop client.

There's hope that the underlying iCloud calendar data is OK and that this is just the Calendar app messing up the link as it reads it.

It does appear that the iCloud data is correct and if I use an IOS client or the web client, I get the right mail link. The problem seems to be with the Yosemite calendar app. The link in that app always points to the same mail entry once you have established the first connection. BTW - It is still a problem on 10.10.1

Me too. What I'm seeing is that iCal isn't following its Mail links at all - when I hover over older links I see a "message" URL that is obviously wrong.

I've spent hours on the phone with Apple Care, and at first they all (I talked to a number of different people) weren't aware of an existing problem, Finally I was escalated to "the engineers", and after a few days was informed that yeah, there's a problem, but they don't know what it is. It wasn't fixed in the most recent update, unfortunately. I've had other problems, where the link seems to work, but it thinks the email is in a different mailbox from where it actually is, and just a gray square shows, with the subject line on top showing me it's the one I want, but no content. I hope they fix that bug too.

Anyone else have that problem? That was there before Yosemite.

I just checked my calendar entries using iCloud in the browser. It shows the url: field which is where the "Show in Mail..." link is stored in the cloud, and the browser Calendar shows a completely different URL than the Calendar desktop client.

There's hope that the underlying iCloud calendar data is OK and that this is just the Calendar app messing up the link as it reads it. I hope. I hope "the engineers" are working hard on figuring this one out.

I am having the same issue... The only work around I have found is that if you right click on the event and select "get info" it pops up with a small info window (that looks identical to the popup window you get when you double click the event) and if you click on the show in mail link that is in that window, the link actually works..... not sure why the other link doesn't work if this link does... Odd.. hopefully this will help ya'll till they fix it...

This worked for me, too, yay! But what doesn't work is "command-i", which brings up what looks like the identical information window, but with a malfunctioning link. Weird!

This helped me.

While the workaround suggested by "manasubie" worked in this case, it basically speaks to Apple's newfound carelessness in things. I am annoyed that these kind of little quirks compelled me to move from Windows to Mac in the first place. And, Mac is heading in the same direction now with this iCal-Mail mess up and bluetooth connectivity troubles in Mavericks.

Hopefully someone from Apple would actually get off their high horse, remove their fancy new Watch, and improve their core product first.