Just updated to El capitan, now I cannot send emails from each of the different accounts I have, I can only do it select one favorite server which is absurd ?

That option is greyed out for me. Can't select it. Sigh...

In the meantime, I called Apple Care, and they had me

get rid of the two email accounts that were POP, and

keep the same two as IMAP. I hate this arrangement!

I will call today to get them back as POP accounts.

[I tried to go from IMAP to POP on my own with a nice

description from another Q&A on the forum, but it

didn't work for me. Onward and upward!]

UPDATE

i deleted all my email accounts ( 2 X I map &2 X iCloud), I put back the imaps in the order I use them and then added the iCloud accounts back.

they all now send from the right account and sent mails are appearing in the right sent boxes

disappointing that it was so much work!

AppleCare did the same thing with me -- deleting email accounts, and then putting them all back in. HOWEVER... All the accounts are now IMAP, and I think I prefer POP accounts. That doesn't seem possible anymore. The AppleCare tech didn't know if that was a Google problem or an El Capitan problem. I agree with duckndilly -- this was disappointing that it was so much work!

Your fix worked 100% for me.

I could receive mail from Comcast, Yahoo, Google, and iCloud.

However, I could *not send* mail from my Comcast mail box. Yes, password was blank. Typed in password, and all information filled out on Apple window.

Thank you!!!!!!

Cammie🙂

Dsac2002 wrote:

It is a pain but, not hard to resolve.

Go to settings and find internet accounts

delete the existing account - use the minus sign

then re-add the account using the plus sign

It's usually simple to add an account e.g gmail account - simply enter email address and password and it should auto find the rest

if struggling you can always contact Apple online support people who can talk you through the process

Good luck

Thank you this totally worked! What a pain it is that upgrading to El Capitan did this.

One thing to add is to make sure you quit Mail before you do the above, or you won't see that it worked and then get frustrated. 😠 I know because I was going to throw the computer when this didn't work, but thankfully thought to quit before throwing computer.

My situation is worse and weirder: After I upgraded to El Capitan (2010 MacBook Pro, I could receive but not send any email. I would hit "send", I would hear the whoosh, the mail showed up n the "send" mailbox, but it never goes to the intended recipient or to me (I always bcc myself). Furthermore this happens with mail I try to send from my iPhone, which has nothing to do with El Capitan! I deleted and reinstalled mail on both devices with no improvement. I tried variations on my account name. I quit mail before reinstalling accounts. What to do?

thank you so much, this solved my mail issues after upgrading to El Capitano! phew 🙂

same problem here. I guess the only option left is to switch to another mail client: Outlook, Spark (coming to OS X),...

Now friends are receiving mail from my business account en colleagues from my private account. Total mess-up!

Just updated to El Capitan. Mine turned out to be that all my accounts needed to have their SSL settings reset and saved. For me using a Godaddy/Wild West host, I had to switch all my settings to use SSL port 995. Once I did that, all my mail came in.

Go to Mail > Preferences > Accounts

Select the problematic account.

Select > Outgoing Server Settings.

Click on the drop-down list and choose "Edit SMTP Server List"

This should bring up a window with a list showing the mail accounts.

Select the problematic account.

Confirm Account info is correct.

Click on the Advanced tab and disable "Automatically detect and maintain account settings"

Your password may be missing here. Fill it in.

Click OK.

My mail sent immediately.