My Mail in Yosemite doesn't work!

This worked for most of my SMTP servers in the list except one. Regardless, this is a side effect of a deeper problem. Side effects are not the result of mistakes in code but a much larger problem of poor engineering (the software architecture is bad). We have seen this over and over in Mac OS X and especially with Mail. It is unfortunate but Mac OS X might be solid for the IT person who likes to watch the kernel run but for the user, it is a house of cards. This problem exemplifies the issue.

This worked for me to fix the problem. Thanks!

I don't have this exact problem, but I am having a major problem with mail in Yosemite, and this is the only thread I can find. When I open up mail, it says I have over 240,000 + emails that it needs to recover. (I've gone into the two accounts online that flow through this program, and I have more like a little over 100). Next, after I hit "import" (as this is the only way I can seem to attempt at all to get started, it tells me it's going to take 76+ hours to accomplish the import, and then says my "start-up disk" is too full to handle it. Which, after doing diagnostics on my computer, turns out I'm only using a little under half the space available. I am beyond frustrated, as Yosemite is effecting other parts of my system, however, in trying to stay on point, I'm only bringing up the email here.

Thanks. ~ M

oone of the problems with an off topic post to a thread is that it doesn't get seen by enough people to get help (usually). Would recommend posting to a new thread for better odds ((and thread clarity). Did you see the last Chicago Bears game? :-)

Many thanks, Mac-Freak ! You solved the problem I was having with Gmail in Mail.app.

Thanks so much, Steve! Your solution fixed all my gmail accounts! 🙂

Worked for me. Thanks!

Same for problem for me. I can get mail, but not send. I've tried the above fixes, none have worked, and am done wasting time with it. I can't send with my .me account either, but I rarely use it. This started with the last Yosemite update, so I am hoping Apple will address the problem in the future. Meanwhile, I'm now using gmail directly from the browser, which works fine. End of frustration.

I have the same problem. One day it worked when I re entered all the preferences but when I tried today the email Outgoing server was Offline and there was no way to get it changed. I spent an hour talking with BT ( My service provider) and in the end I was told it was an Apple issue.

I had the same problem but spoke to Apple via their support page and as it was a result of a recent software upgrade, i.e. Yosemite, there was no charge. All my outgoing mail servers were off line so they removed them all, re input them and changed the port number and the problem was solved. That was some 2 weeks ago and have not had a problem since.

Thanks Steve! It works like magic. 🙂

Google 2-step verification solved my problem too. You'll have to generate a new password for each device you access Gmail on.

Same issue here. I have tried multiple suggestions, can't say that any of them are working because the problem seems inconsistent. Can Apple get their stuff together, this is ridiculous!

Not sure what I did exactly, but going into 'advanced' section and ticking a box seemed to have put my gmail accounts back online.... odd thing is, this was only effecting 2 of my 3 gmail accounts on my desktop Mac, nothing different on my MacBook Air laptop?? And its odd that one day it all works fine, then out of nowhere, issues start??

Another of the 'death by a thousand cuts'. There are many good people working for Apple, and there are many useless ones. Unfortunately the useless ones appear to be getting the upper hand. Mail is not rocket science and the Mail app does not need geniuses to write and maintain it. I wish Apple would spend more time tidying up and less time slapping fresh coats of paint on everything.