qrde, w starym lms-sendinvoices (dira) miałem "\n" i działało, a teraz testuję to z wersją z git i kaplica:
#v+
--Message-Boundary-by-Mail-Sender-1427960894
Content-type: text/plain; charset="UTF-8"
Content-description: Mail message body
Content-transfer-encoding: quoted-printable
Content-disposition: inline
Witamy. <br> W za=C5=82=C4=85czniku faktura Nr 1816/04/2015\n\nPozdrawiamy\=
=9B=C4=87 na\n ibok
--Message-Boundary-by-Mail-Sender-1427960894
Content-type: application/octetstream
Content-transfer-encoding: Base64
Content-disposition: attachment; filename="invoice_201977.pdf"
#v-