Gmail 阻止电子邮件模板中的小型嵌入式内联图像

新手上路,请多包涵

我正在向我的会员发送电子邮件,但 Gmail 似乎阻止了我在电子邮件中放置的图片。它们作为 base 64 编码 字符串嵌入到 img 标签中。我在网上查看了多个关于 Gmail 不发送图片的话题,但没有找到任何有用的信息。到目前为止,这是我尝试过的一些事情。 1. 在 Gmail 中启用外部图像(通过设置图标) 2. 将图像的大小减少到 8000 字节以下(Outlook.com 不会发送图像 ~ 15000 字节)

如果我发送到 outlook.com 电子邮件地址,我会收到很好的图像,但在 Gmail 中,img 标签的 src 是空的,并且电子邮件中没有图像显示。我正在使用 https://putsmail.com 来测试/发送我的电子邮件,所以我知道问题不是 SendGrid(我的电子邮件发送服务)或我的应用程序的问题。

下面是我的模板之一。我正在使用来自 litmuss 的电子邮件模板。下面的所有内容基本上都是默认的,除了我添加的额外信息,如图像和电子邮件正文中的一些额外文本。

这是一个带有图像数据的完整模板的 jsfiddle ,可以将其直接复制到 putsmail 中并发送进行测试!任何有关 Gmail 为什么不发送图像的帮助或信息都很棒!

 <!DOCTYPE html>
<html>
<head>
    <title></title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <style type="text/css">
        /* FONTS */
        @@media screen {
            @@font-face {
                font-family: 'Lato';
                font-style: normal;
                font-weight: 400;
                src: local('Lato Regular'), local('Lato-Regular'), url(https://fonts.gstatic.com/s/lato/v11/qIIYRU-oROkIk8vfvxw6QvesZW2xOQ-xsNqO47m55DA.woff) format('woff');
            }

            @@font-face {
                font-family: 'Lato';
                font-style: normal;
                font-weight: 700;
                src: local('Lato Bold'), local('Lato-Bold'), url(https://fonts.gstatic.com/s/lato/v11/qdgUG4U09HnJwhYI-uK18wLUuEpTyoUstqEm5AMlJo4.woff) format('woff');
            }

            @@font-face {
                font-family: 'Lato';
                font-style: italic;
                font-weight: 400;
                src: local('Lato Italic'), local('Lato-Italic'), url(https://fonts.gstatic.com/s/lato/v11/RYyZNoeFgb0l7W3Vu1aSWOvvDin1pK8aKteLpeZ5c0A.woff) format('woff');
            }

            @@font-face {
                font-family: 'Lato';
                font-style: italic;
                font-weight: 700;
                src: local('Lato Bold Italic'), local('Lato-BoldItalic'), url(https://fonts.gstatic.com/s/lato/v11/HkF_qI1x_noxlxhrhMQYELO3LdcAZYWl9Si6vvxL-qU.woff) format('woff');
            }
        }

        /* CLIENT-SPECIFIC STYLES */
        body, table, td, a {
            -webkit-text-size-adjust: 100%;
            -ms-text-size-adjust: 100%;
        }

        table, td {
            mso-table-lspace: 0pt;
            mso-table-rspace: 0pt;
        }

        img {
            -ms-interpolation-mode: bicubic;
        }

        /* RESET STYLES */
        img {
            border: 0;
            height: auto;
            line-height: 100%;
            outline: none;
            text-decoration: none;
        }

        table {
            border-collapse: collapse !important;
        }

        body {
            height: 100% !important;
            margin: 0 !important;
            padding: 0 !important;
            width: 100% !important;
        }

        /* iOS BLUE LINKS */
        a[x-apple-data-detectors] {
            color: inherit !important;
            text-decoration: none !important;
            font-size: inherit !important;
            font-family: inherit !important;
            font-weight: inherit !important;
            line-height: inherit !important;
        }

        /* MOBILE STYLES */
        @@media screen and (max-width:600px) {
            h1 {
                font-size: 32px !important;
                line-height: 32px !important;
            }
        }

        /* ANDROID CENTER FIX */
        div[style*="margin: 16px 0;"] {
            margin: 0 !important;
        }
    </style>
</head>
<body style="background-color: #f4f4f4; margin: 0 !important; padding: 0 !important;">

    <!-- HIDDEN PREHEADER TEXT -->
    <div style="display: none; font-size: 1px; color: #fefefe; line-height: 1px; font-family: 'Lato', Helvetica, Arial, sans-serif; max-height: 0px; max-width: 0px; opacity: 0; overflow: hidden;">
        We're thrilled you created a YogaBandy event! Get ready for members to register.
    </div>

    <table border="0" cellpadding="0" cellspacing="0" width="100%">
        <!-- LOGO -->
        <tr>
            <td bgcolor="#16749F" align="center">
                <!--[if (gte mso 9)|(IE)]>
                <table align="center" border="0" cellspacing="0" cellpadding="0" width="600">
                <tr>
                <td align="center" valign="top" width="600">
                <![endif]-->
                <table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 600px;">
                    <tr>
                        <td align="center" valign="top" style="padding: 40px 10px 40px 10px;">
                            <a href="https://YogaBandy.com" target="_blank">
                                <img alt="Logo" src="http://litmuswww.s3.amazonaws.com/community/template-gallery/ceej/logo.png" width="40" height="40" style="display: block; width: 40px; max-width: 40px; min-width: 40px; font-family: 'Lato', Helvetica, Arial, sans-serif; color: #ffffff; font-size: 18px;" border="0">
                            </a>
                        </td>
                    </tr>
                </table>
                <!--[if (gte mso 9)|(IE)]>
                </td>
                </tr>
                </table>
                <![endif]-->
            </td>
        </tr>
        <!-- HERO -->
        <tr>
            <td bgcolor="#16749F" align="center" style="padding: 0px 10px 0px 10px;">
                <!--[if (gte mso 9)|(IE)]>
                <table align="center" border="0" cellspacing="0" cellpadding="0" width="600">
                <tr>
                <td align="center" valign="top" width="600">
                <![endif]-->
                <table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 600px;">
                    <tr>
                        <td bgcolor="#ffffff" align="center" valign="top" style="padding: 40px 20px 20px 20px; border-radius: 4px 4px 0px 0px; color: #111111; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 48px; font-weight: 400; letter-spacing: 4px; line-height: 48px;">
                            <h2 style="font-size: 48px; font-weight: 400; margin: 0;">Event Created</h2>
                        </td>
                    </tr>
                </table>
                <!--[if (gte mso 9)|(IE)]>
                </td>
                </tr>
                </table>
                <![endif]-->
            </td>
        </tr>
        <!-- COPY BLOCK -->
        <tr>
            <td bgcolor="#f4f4f4" align="center" style="padding: 0px 10px 0px 10px;">
                <!--[if (gte mso 9)|(IE)]>
                <table align="center" border="0" cellspacing="0" cellpadding="0" width="600">
                <tr>
                <td align="center" valign="top" width="600">
                <![endif]-->
                <table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 600px;">
                    <!-- COPY -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">We're excited you have created an event. Here are some of the details below.</p>
                        </td>
                    </tr>
                    <!-- Host Space -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">
                                <a href="https://www.YogaBandy.com/Space/Public/@Model.SpaceId" target="_blank" class="thumbnail" style="margin-bottom: 0px;">
                                    <img alt="SpaceImage" title="Space Image" style="display: block" width="225" height="126" src="data:image/jpg;base64,@Raw(Model.SpaceThumbnail)" />
                                    <div class="caption">
                                        @Model.SpaceName
                                    </div>
                                </a>
                            </p>
                        </td>
                    </tr>
                    <!-- Host Image -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">
                                <a href="https://www.YogaBandy.com/Profile/Public/@Model.HostId" target="_blank" class="thumbnail" style="margin-bottom: 0px;">
                                    <img alt="HostImage" title="Host Image" style="display: block" width="225" height="225" src="data:image/jpg;base64,@Raw(Model.HostThumbnail)" />
                                    <div class="caption">
                                        @Model.HostName
                                    </div>
                                </a>
                            </p>
                        </td>
                    </tr>
                    <!-- DATE -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">@Model.Date.ToLongDateString()</p>
                        </td>
                    </tr>
                    <!-- TIME -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">
                                <div>Time: @Model.Date.ToShortTimeString()</div>
                            </p>
                        </td>
                    </tr>
                    <!-- Location -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">@Model.Location</p>
                        </td>
                    </tr>
                    <!-- DURATION -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">@Model.Duration</p>
                        </td>
                    </tr>
                    <!-- STYLE -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 20px 30px 40px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">@Model.Style</p>
                        </td>
                    </tr>
                    <!-- BULLETPROOF BUTTON -->
                    <tr>
                        <td bgcolor="#ffffff" align="left">
                            <table width="100%" border="0" cellspacing="0" cellpadding="0">
                                <tr>
                                    <td bgcolor="#ffffff" align="center" style="padding: 20px 30px 60px 30px;">
                                        <table border="0" cellspacing="0" cellpadding="0">
                                            <tr>
                                                <td align="center" style="border-radius: 3px;" bgcolor="#16749F"><a href="" target="_blank" style="font-size: 20px; font-family: Helvetica, Arial, sans-serif; color: #ffffff; text-decoration: none; color: #ffffff; text-decoration: none; padding: 15px 25px; border-radius: 2px; border: 1px solid #16749F; display: inline-block;">Add To Calendar</a></td>
                                            </tr>
                                        </table>
                                    </td>
                                </tr>
                            </table>
                        </td>
                    </tr>


                    <!-- COPY -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 0px 30px 20px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">If you have any questions, just send an email to the support address—we're always happy to help out.</p>
                        </td>
                    </tr>
                    <!-- COPY -->
                    <tr>
                        <td bgcolor="#ffffff" align="left" style="padding: 0px 30px 40px 30px; border-radius: 0px 0px 4px 4px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <p style="margin: 0;">Cheers,<br>The YogaBandy Team</p>
                        </td>
                    </tr>
                </table>
                <!--[if (gte mso 9)|(IE)]>
                </td>
                </tr>
                </table>
                <![endif]-->
            </td>
        </tr>
        <!-- SUPPORT CALLOUT -->
        <tr>
            <td bgcolor="#f4f4f4" align="center" style="padding: 30px 10px 0px 10px;">
                <!--[if (gte mso 9)|(IE)]>
                <table align="center" border="0" cellspacing="0" cellpadding="0" width="600">
                <tr>
                <td align="center" valign="top" width="600">
                <![endif]-->
                <table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 600px;">
                    <!-- HEADLINE -->
                    <tr>
                        <td bgcolor="#157b9d" align="center" style="padding: 30px 30px 30px 30px; border-radius: 4px 4px 4px 4px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 400; line-height: 25px;">
                            <h2 style="font-size: 20px; font-weight: 400; color: #111111; margin: 0;">Need more help?</h2>
                            <p style="margin: 0;"><a href="https://YogaBandy/Contact.com" target="_blank" style="color: #FFFFFF;">We&rsquo;re here, ready to help</a></p>
                        </td>
                    </tr>
                </table>
                <!--[if (gte mso 9)|(IE)]>
                </td>
                </tr>
                </table>
                <![endif]-->
            </td>
        </tr>
        <!-- FOOTER -->
        <tr>
            <td bgcolor="#f4f4f4" align="center" style="padding: 0px 10px 0px 10px;">
                <!--[if (gte mso 9)|(IE)]>
                <table align="center" border="0" cellspacing="0" cellpadding="0" width="600">
                <tr>
                <td align="center" valign="top" width="600">
                <![endif]-->
                <table border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width: 600px;">
                    <!-- NAVIGATION -->
                    <!-- PERMISSION REMINDER -->
                    <tr>
                        <td bgcolor="#f4f4f4" align="left" style="padding: 0px 30px 30px 30px; color: #666666; font-family: 'Lato', Helvetica, Arial, sans-serif; font-size: 14px; font-weight: 400; line-height: 18px;">
                            <p style="margin: 0;">You received this email because you just created a YogaBandy event. If it looks weird, <a href="https://YogaBandy.com" target="_blank" style="color: #111111; font-weight: 700;">view it in your browser</a>.</p>
                        </td>
                    </tr>
                    <!-- UNSUBSCRIBE -->
                    <!-- ADDRESS -->

                </table>
                <!--[if (gte mso 9)|(IE)]>
                </td>
                </tr>
                </table>
                <![endif]-->
            </td>
        </tr>
    </table>

</body>
</html>

原文由 user1186050 发布,翻译遵循 CC BY-SA 4.0 许可协议

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1 个回答

Google 拒绝在 Gmail 的网络界面中显示带有数据 url 的图像。这是一个已知问题(在谷歌看来是一项安全措施),长期以来一直受到高度批评。

好消息是,除了使用外部图像之外,您还有另一种选择。

使用带有 Content-ID 的内联附件适用于 Gmail。

将图像添加为内联附件后,您需要在 html 正文中指向 CID URL 而不是 数据 URL

有很多现代图书馆可以让您轻松发送带有内联附件的电子邮件。但是我用带有 CDO 库的 VBScript 编写了一个示例脚本,如果您安装了 Windows 2000+ 的盒子就可以使用。

让我们准备测试环境。

将文件放在一个目录中,如下面的屏幕截图所示。

在此处输入图像描述

tpl.html 是你给的模板文件。您需要对此文件进行一些更改。

将两个 img 元素分别替换为以下内容。请注意,数据网址不见了。 image1image2 是为脚本中的每个内嵌附件指定的内容 ID。此处与文件名无关。

 <img src="cid:image1" alt="SpaceImage" title="Space Image" style="display: block" width="225" height="126" />
<img src="cid:image2" alt="HostImage" title="Host Image" style="display: block" width="225" height="225" />

嵌入式.vbs:

 MsgBox "Wait while your email is being sent.", vbOKOnly Or vbInformation

'************ CONFIGURATION *************
Const smtpUsername = "..."
Const smtpPassword = "..."
Const smtpHost = "smtp.sendgrid.net"
Const smtpPort = 587
Const senderEmail = "...@..."
Const recipientEmail = "...@gmail.com"
'************ CONFIGURATION *************

Const cdoRefTypeId = 0

Set Fso = CreateObject("Scripting.FileSystemObject")

Set objMail = CreateObject("CDO.Message")
With objMail.Configuration
    .Fields("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate") = 1
    .Fields("http://schemas.microsoft.com/cdo/configuration/sendusername") = smtpUsername
    .Fields("http://schemas.microsoft.com/cdo/configuration/sendpassword") = smtpPassword
    .Fields("http://schemas.microsoft.com/cdo/configuration/smtpserver") = smtpHost
    .Fields("http://schemas.microsoft.com/cdo/configuration/smtpserverport")  = smtpPort
    .Fields("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2
    .Fields("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout") = 20 'secs
    .Fields.Update
End With

With objMail
    .AutoGenerateTextBody = False
    .From = senderEmail
    .To = recipientEmail
    .Subject = "Inline Image Test"
    .BodyPart.ContentTransferEncoding = "quoted-printable"
    .BodyPart.Charset = "utf-8"

    ' Adding images as inline attachments with Content IDs which is used with image sources. e.g. <img src="cid:image1" .. >
    .AddRelatedBodyPart Fso.GetAbsolutePathName("image1.jpg"), "image1", cdoRefTypeId
    .AddRelatedBodyPart Fso.GetAbsolutePathName("image2.jpg"), "image2", cdoRefTypeId

    'append html body from file
    .HTMLBody = Fso.OpenTextFile("tpl.html").ReadAll
    .Send
End With

MsgBox "Email successfully sent! Check your inbox.", vbOKOnly Or vbInformation

双击并等待指示。

另见 https://stackoverflow.com/search?q=is%3Aquestion+%5Bemail%5D+inline+image

原文由 Kul-Tigin 发布,翻译遵循 CC BY-SA 4.0 许可协议

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