PHPmailer 和边界 headers

Question

是否可以通过 PHPmailer 为代码 add/update 设置边界 headers

$mail->addStringAttachment($test, 'test.txt', 'quoted-printable');

我需要add/update

--b1_KyZbvbrSl55hdWoQf7uUOwdfF2oGjqnCyP6rqNmlA
Content-Type: text/plain; name="test.txt"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment; filename=test.txt

看起来像

--b1_KyZbvbrSl55hdWoQf7uUOwdfF2oGjqnCyP6rqNmlA
Content-Type: text/plain; name="test.txt"; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment; filename=test.txt
Content-ID: 20cca107-2625-49ce-9357-95254a59147f@127.0.0.1

所以为 Content-Type header 添加了 charset 参数，然后添加了新的 header Content-ID

有什么建议吗？

Answer 1

对于 transfer-encoding 和字符集

$mail->Encoding = 'quoted-printable';
$mail->CharSet = 'UTF-8';

对于 content-id 检查 addEmbeddedImage 方法或尝试像这样直接添加 header：

$mail->addCustomHeader('Content-ID', '20cca107-2625-49ce-9357-95254a59147f@127.0.0.1');

Answer 2

经过进一步调查发现

The addStringEmbeddedImage method lets you set a cid for the attachment which will set that header for you. You can ignore the "image" in the method name - it doesn't care what type of content you attach really.

所以在我的情况下会是

$mail->addStringEmbeddedImage(file_get_contents($file_name, FILE_USE_INCLUDE_PATH), $uuid, $file_name, 'base64', '', 'attachment');

关于将 charset 参数添加到 Content-Type 边界 header

quoted-printable transfer encoding is ASCII 7bit safe, so the default will work fine and it doesn't need an extra charset clause.

PHPmailer 和边界 headers

PHPmailer and boundary headers

mime

boundary

phpmailer