[quote user="fojtik"]Thanks for info. When the version 5 is planned?[/quote]

It's unpredictable as always, even David Harris won't be able to tell. There hasn't even been a beta version ever since v4.7 was released.

See the image. The subject is not displayed for many Emails and remains empty.

The header is follows, but this header has been created with Pmail itself:

X-cs: R
X-CS-Version: 1.0
From: Xxxxx Xxxxx <xxx></xxx>
X-RS-ID: <default></default>
X-RS-Flags: 1,1,1,1,0,0,0
X-RS-Sigset: 0
To: Xxxxx Xxxxx <xxx></xxx>
Subject: =?UTF-8?Q?Tys_na_tom_byl_v_tom_skladu_je=C5=A1t=C4=9B_velmi_dob=C5=99e?=
Comments: Confirmation of reading was requested.
Comments: Confirmation of delivery was requested.
MIME-Version: 1.0
Content-type: text/plain; charset=ISO-8859-1
Content-transfer-encoding: 8BIT
Date: Thu, 30 Oct 2014 11:27:17 +0100@xxx.cz>@xxx.cz>

[quote user="fojtik"]See the image. The subject is not displayed for many Emails and remains empty.[/quote]

Known issue caused be header encoding

(charset related)

and the current folder handling in Pegasus Mail. Will cease when the new folder handling is released with PM v5.

Thanks for info. When the version 5 is planned?