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Question:

Email.AddRelatedHeader does not work anymore

Sep 01 '15 at 06:00

We are using NuGet package of x64 library for C#.

We've noticed this in 9.5.0.45, but the bug is still present in 9.5.0.51.

Consider this simple piece of code:

var email = new Email();
email.AddRelatedString("foo.txt", "this is some related content", "utf-8");
email.AddRelatedHeader(0, "FooBar", "some value");
Console.WriteLine(email.GetMime());

In generated MIME, the "FooBar" header is missing:

MIME-Version: 1.0
Date: Mon, 10 Aug 2015 17:00:44 +0200
Message-ID: <D0FAE0A0BCC353A2410D8D2A06B53E607707459F@MS0PC>
Content-Type: multipart/related; boundary="------------050504020908070905040803"

X-Priority: 3 (Normal)

--------------050504020908070905040803
Content-Type: text/plain; name="foo.txt"
Content-Transfer-Encoding: quoted-printable
Content-ID: <CID-7450f0b0-6679-6048-6d75-4e3bc62c8607@MS0PC>

=EF=BB=BFthis is some related content
--------------050504020908070905040803--

While it works perfectly well in 9.5.0.41:

Date: Mon, 10 Aug 2015 17:02:57 +0200
Message-ID: <5560A59B57F441FBCFFE7930E0B7BE54562EEF09@MS0PC>
Content-Type: multipart/related;
         boundary="------------000201020303080607010708"
X-Priority: 3 (Normal)

--------------000201020303080607010708
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

--------------000201020303080607010708
Content-Type: text/plain; name="foo.txt"
Content-Transfer-Encoding: quoted-printable
Content-ID: <CID-cd3fe3ae-07e9-6017-511f-2f636d4c8414@MS0PC>
FooBar: some value

=EF=BB=BFthis is some related content
--------------000201020303080607010708--

Is there any chance of fixing this? This really holds us from upgrading the library to the most recent version. We use "AddRelatedHeader" to substitute auto-generated "Content-Id" headers with our own, but, as you can see, it does not work with any header.

Thanks.

Accepted Answer

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