Posto il codice html ripreso da Outlook 2013:
Spero che sia quello giusto.codice:Return-Path: <miaemail@miosito.it> Received: from smtp116.miosito.it (10.192.86.80) by cpms-57a3.cp.miosito.it (9.0.031) id 5D79ECFD01509D1C for miaemail@miosito.it; Mon, 7 Oct 2019 16:55:32 +0200 Received: from ebifccidggc.ams03.turbo-smtp.net (185.228.36.62) by smtp116.miosito.it (8.6.060.43) id 5D3AC3461349417F for miaemail@miosito.it; Mon, 7 Oct 2019 16:55:31 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=miosito.it; s=turbo-smtp; x=1571064931; h=DomainKey-Signature: Received:Received:MIME-Version:From:To:Date:Subject:Content-Type: Message-ID; bh=vYKNkwWpf9zLWObBa1MOuEhavq907zKrteoQX/oLVAc=; b=U wtKi/7M2foe/6FCBaOIGWk0RgFxgAG0bJTdKIiARV9gbkUz/Nn81Aab0WJpcmq7t p220SeNtehKdZc6DEkPq1Eu4Ekb039fNI8BfXlW4UOxVTlYenFXo8ZDql4RpNFfV xA0PtgPNOPrut2O63ft5aZY2MlY1rgTy4LNTAIEqsc= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=turbo-smtp; d=miositospa.it; h=Received:Received:X-TurboSMTP-Tracking:X-Virus-Scanned:MIME-Version:From:To:Date:Subject:Content-Type:Message-ID; b=bMfmUbr0Jwk1s7C0IJOY6fpJhzA/68EfjuGFMNwGhIVAk4jVDHOIohBwV5sfbM cdNFxWY/3mQm9reA3hXyb/rtX8kZeYzAY+zKdizbz1VoyofGOUojPaYXmPtziqO8 mkZJ47NCiEz5eqaMdMsWIp2xDP2KU7EKV3hpA3pWlh63M=; Received: (qmail 28576 invoked from network); 7 Oct 2019 14:55:30 -0000 Received: X-TurboSMTP-Tracking: 5334376046 X-Virus-Scanned: amavisd-new at MIME-Version: 1.0 From: miaemail@miositospa.it To: indirizzodestinatario@miosito.it Date: 7 Oct 2019 16:55:26 +0200 Subject: Prova invio email Content-Type: multipart/alternative; boundary=--boundary_0_6e95beda-44aa-4b1a-9cda-8d7b115837c5 Message-ID: <20191007145527.E72AB300DB4E@mail.miositospa.it>
Il codice (purtroppo) l'ho scritto io ed l'ho integrato nel progetto vb.net.
Grazie