Blank subject line when replying to e-mail

Question

Blank subject line when replying to e-mail

I use Apple Mail 10.0 (3226) on several Macs, with OS Sierra installed on all of them, and as of late a strange problem has begun occurring. In some cases, when I reply to an e-mail using the reply function, the subject line turns out empty, even though a subject was included in the original e-mail that I'm replying to. Before, the subject was always repeated, after "Re:". I have not been able to clarify why the subject sometimes appears and sometimes not. Any tip on how to fix this annoying problem (which means I have to copy the subject and paste it manually)?

Posted on Oct 19, 2016 2:04 PM

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Answer 1

Jun 28, 2017 7:46 AM in response to lezone

I just got a new 27" iMac. This is my first experience with Sierra and Mac Mail is driving me nuts. Blank subject lines when replying, missing signatures, not grouping my emails together like it used to... I've tried rebuilding the mailbox, I've tried restarting, but like the above poster said, as soon as new mail arrives the problem returns. I can live with the other two, but blank subject lines is making me awfully cranky.

Please fix this, Apple. The rest of Sierra is wonderful.

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Answer 2

trevoz

Level 4

1,990 points

Oct 19, 2016 4:11 PM in response to nonicoclolasos

Have you tried Mail > Mailbox > Rebuild?

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Answer 3

Oct 20, 2016 5:34 AM in response to trevoz

trevoz: I had not tried this. Now I have, and I must say that it seems to have worked. Keeping my fingers crossed that the problem won't appear. Many thanks for your advice!

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Answer 4

Oct 20, 2016 6:38 AM in response to nonicoclolasos

Alas, the problem turns out not to have been solved. A new e-mail just arrived, again with the blank subject line when I clicked "Reply". Any other ideas?

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Answer 5

mc_ksv

Level 1

4 points

Oct 25, 2016 2:23 AM in response to trevoz

Helped after quiting and restarting.

Thanks 🙂

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Answer 6

Oct 26, 2016 1:26 AM in response to mc_ksv

mc_ksv: If I restart Mail, the problem disappears for the e-mails I have so far received. But when the next one comes, the problem is still there. I then either have to restart Mail or copy and paste the subject line

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Answer 7

mc_ksv

Level 1

4 points

Oct 26, 2016 3:22 AM in response to nonicoclolasos

Yeps. Realized that your are right. Fixed is not a fix but a work around.

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Answer 8

lezone

Level 1

13 points

Dec 13, 2016 10:22 AM in response to nonicoclolasos

I'm running into this too. Hopping Apple takes note.

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Answer 9

Jul 24, 2017 11:07 AM in response to nonicoclolasos

I am running into the same problem after upgrading to Sierra. Maddening. Quitting Mail or rebuilding fixes the problem for existing emails in the inbox, but the problem returns for all new messages.

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