Autocrypt - allways added to headers

Hi. I’ve got problem with Autocrypt: header. Even if I’m not use PGP, but enable PGP with this account, the header allways is visible.


Content-Type: multipart/alternative; boundary="----4RKZU2NQVLV8SE9SZ412IQ9XDLEPI5"
Content-Transfer-Encoding: 7bit
Autocrypt:; keydata=

The main problem is with the reply email to many recipients. About 25 emails. Header sections going to long, and email hasn’t “From:” header and others important.

What is the solution ? Maybe - like Thinderbird - add Autocrypt on the very end of headers section ?

A big point of Autocrypt is that you distribute your public key with every email that you send. See also

What do you mean by “header sections going to[o] long”? There’s no size limit for email headers.
Are you maybe running into this issue: Use folding to properly handle To/CC/BCC with more than 1000 characters? In that case please update to the latest beta version.

Yeah, I know that distribute my public key with every email is VERY big point, but I had little issues with this.

I receive email with 25 recipients. After configuration K9, after check, that I have key in cryptography section, I answered for this email.

I have noticed, return from recipients server with message:


email: host: said:
550-5.7.1 [ 11] Our system has detected that this
message is 550-5.7.1 not RFC 5322 compliant: 550-5.7.1 ‘From’ header is
missing. 550-5.7.1 To reduce the amount of spam sent to Gmail, this message
has been 550-5.7.1 blocked. Please visit 550-5.7.1
550 5.7.1 and
review RFC 5322 specifications for more information. x19si853827ljm.164 -
gsmtp (in reply to end of DATA command)

email: host[] said: 554 Nie przyjmiemy Twojej wiadomosci poniewaz brakuje nadawcy / We can't accept your message - missing From: (#5.3.0) (in reply to end of DATA command)


After this I check “Sent” folder and I saw source of this message:


Received: from [] (unknown [])
(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
(No client certificate requested)
by (Postfix) with ESMTPSA id CD20D2A268C;
Wed, 30 Sep 2020 22:01:29 +0200 (CEST)
Date: Wed, 30 Sep 2020 22:01:29 +0200
User-Agent: K-9 Mail for Android
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="----RGLJ5A4M52TJG82D6AX5X1RI9C65WA"
Content-Transfer-Encoding: 7bit
Autocrypt: addr=email; keydata=

Subject: =?UTF-8?Q?Re=3A_Turkusowa_-_answer=C5=BA_z_UM?=
To: email
CC: 25 addressess…

From: email
Message-ID: <


What went wrong ?
Why I have blank line before “From:” ?
Why “From:” is so far from beginning of headers section ?

Regards :grinning:

As suspected this is a bug unrelated to Autocrypt. Please check the second part of my first comment. The bug is fixed in recent beta versions.

I’ll try beta version…

Wow - new beta version is amazing… :wink: Very nice interface, very good work !
Good job !

One question is - on messages list i read one message and how i can mark this messages

as unread << ???
On previous full version was “mark messages as unread” in short menu after long press on message.
Please - help me.

Please create a new topic for this question.