彩票走势图

邮件组件集合MailBee Objects发送电子邮件教程(七):邮件合并和批量电子邮件-高级

翻译|使用教程|编辑:况鱼杰|2020-12-07 11:17:46.973|阅读 151 次

概述:本示例使用单一模板和数据库发送多封带附件的邮件。与简单版示例的两个主要区别。

# 慧都年终大促·界面/图表报表/文档/IDE等千款热门软控件火热促销中 >>

相关链接:

MailBee Objects是一个组件集合。您可以使用该控件创建并将邮件发送到SMTP服务器并从POP3服务器接收、解析以及删除电子邮件,还能在IMAP4服务器上管理电子邮件以及文件夹。它同样支持SSL以及S/MIME以获得更好的安全性能。MailBee控件能在ASP、VB、C++或任何支持ActiveX技术的语言中使用。

点击下载最新版MailBee Objects


本示例使用单一模板和数据库发送多封带附件的邮件。与简单版示例的两个主要区别。

  • 支持带有附件等可选部分的邮件。例如,有的用户会收到附件,有的用户不会收到。
  • 限制通过单次连接会话发送电子邮件的数量。当您的SMTP服务器施加这种限制时,该功能非常有用。

该代码假设数据库位于C:\Docs/advanced_merge.mdb文件中,"email "表如下:

id
email
first_name
last_name
filename
1 account@domain.com
John
Doe
345.doc
2 bill.smith@company.com
Bill 
Smith

3 Kate@site.com
Kate
Jones
377.doc

注意:某些SMTP服务器限制每秒(而非每个连接)的最大发送数量。例如,您每秒只能从同一IP地址发送5封电子邮件。在这种情况下,您可以在MailBee Message Queue系统中使用排队和后台传递。有关详细信息,请参见排队示例。

Visual Basic

' Mailer object
Dim objSMTP

' ADO Connection object
Dim objConn

' ADO Recordset object
Dim rsEmails

' Merge patterns (Body and "To:", all other fields remain
' unchanged for all e-mails in the mailing list)
Dim strBodyPattern, strToPattern

' Counter to limit number of sends per connection
Dim I

' Define body pattern
strBodyPattern = "Hello %%FIRST_NAME%%, " & vbCrLf & _
  "You are welcome to visit our site at:" & vbCrLf & _
  "//www.site.com" & vbCrLf & vbCrLf & _
  "Sincerely, Site Team"

' Define "To:" pattern (will look like
' "John Doe " in e-mail)
strToPattern = "%%FIRST_NAME%% %%LAST_NAME%% <%%EMAIL%%>"

' Create SMTP mailer component
Set objSMTP  = CreateObject("MailBee.SMTP")

' Enable logging SMTP session into a file. If any
' errors occur, the log can be used to investigate
' the problem.
objSMTP.EnableLogging = True
objSMTP.LogFilePath = "C:\smtp_log.txt"
objSMTP.ClearLog

' Unlock mailer component
objSMTP.LicenseKey = "put your license key here"

' Specify SMTP server name
objSMTP.ServerName = "localhost"

' Comment next 3 lines if your SMTP server does not
' require SMTP authentication
objSMTP.AuthMethod = 2
objSMTP.UserName = "your mail account name"
objSMTP.Password = "your mail account password"

' Create ADO Connection object
Set objConn  = CreateObject("ADODB.Connection")

' Connect to Access database
objConn.Open "Provider=Microsoft.Jet.OLEDB.4.0; " & _
   "Data Source=C:\Docs\advanced_merge.mdb;"

' Create ADO Recordset object
Set rsEmails = CreateObject("ADODB.Recordset")
  
' Open "emails" table. This table is
' actual data source for the merge
rsEmails.Open "emails", objConn

' Initialize counter to connect to SMTP
' server before sending any e-mails
I = 1

' Loop through the table
Do While Not rsEmails.EOF

  ' Connect to the server. We connect only one time
  ' per 10 sends and reuse existing connection for
  ' subsequent 9 e-mails.
  If I = 1 Then
    If Not objSMTP.Connect Then
      ' Notify user on connection error and exit
      MsgBox "Error #" & objSMTP.ErrCode & ", " & objSMTP.ErrDesc
      Exit Do
    End If
  End If

  ' Set all properties for each e-mail.
  ' This is required because we will reset
  ' the message later to free Attachments
  ' collection.

  ' Plain-text e-mail. Change to 1 to send HTML e-mail
  objSMTP.BodyFormat = 0
  
  ' Specify "From:" and "Subject:". They remain unchanged
  ' for all the e-mails.
  objSMTP.Message.FromAddr = "Site Team "
  objSMTP.Message.Subject = "Invitation"
  
  ' Merge body pattern and actual data
  ' from the database
  objSMTP.Message.BodyText = strBodyPattern
  objSMTP.Message.BodyText = Replace(objSMTP.Message.BodyText, "%%FIRST_NAME%%", rsEmails("first_name"))

  ' Merge body pattern and actual data
  ' from the database
  objSMTP.Message.ToAddr = strToPattern
  objSMTP.Message.ToAddr = Replace(objSMTP.Message.ToAddr, "%%FIRST_NAME%%", rsEmails("first_name"))
  objSMTP.Message.ToAddr = Replace(objSMTP.Message.ToAddr, "%%LAST_NAME%%", rsEmails("last_name"))
  objSMTP.Message.ToAddr = Replace(objSMTP.Message.ToAddr, "%%EMAIL%%", rsEmails("email"))
    
  ' Add attachment if required
  If rsEmails("filename") <> "" Then
    objSMTP.Message.AddAttachment "C:\Data\" & rsEmails("filename")
  End If

  ' Try to send e-mail
  If Not objSMTP.Send Then
    ' Notify user on sending error
    MsgBox "Error #" & objSMTP.ErrCode & ", " & objSMTP.ErrDesc
  End If
    
  ' Reset all message properties to defaults and
  ' clear Attachments collection. If this method
  ' was not called, subsequent messages would also
  ' hold attachments from previously sent messages.
  objSMTP.ResetMessage
    
  ' Proceed with the next record in the table
  rsEmails.MoveNext

  ' Disconnect once 10-th e-mail is sent or passed
  ' the end of the database.
  '
  ' You may adjust number of 10 to the maximum
  ' "sends per connection" value allowed by your
  ' SMTP server.
  If I = 10 Or rsEmails.EOF Then

    ' Disconnect from SMTP server
    objSMTP.Disconnect

    ' Reinitialize counter to force Connect
    ' before next send
    I = 0
  End If

  ' Proceed with the next e-mail
  I = I + 1
Loop
  
' Close the table and the whole database
rsEmails.Close
objConn.Close

' Free database-related objects
Set rsEmails = Nothing
Set objConn = Nothing

ASP:

<%
' Mailer object
Dim objSMTP

' ADO Connection object
Dim objConn

' ADO Recordset object
Dim rsEmails

' Merge patterns (Body and "To:", all other fields remain
' unchanged for all e-mails in the mailing list)
Dim strBodyPattern, strToPattern

' Counter to limit number of sends per connection
Dim I

' Define body pattern
strBodyPattern = "Hello %%FIRST_NAME%%, " & vbCrLf & _
  "You are welcome to visit our site at:" & vbCrLf & _
  "//www.site.com" & vbCrLf & vbCrLf & _
  "Sincerely, Site Team"

' Define "To:" pattern (will look like
' "John Doe " in e-mail)
strToPattern = "%%FIRST_NAME%% %%LAST_NAME%% <%%EMAIL%%>"

' Create SMTP mailer component
Set objSMTP  = Server.CreateObject("MailBee.SMTP")

' Enable logging SMTP session into a file. If any
' errors occur, the log can be used to investigate
' the problem.
objSMTP.EnableLogging = True
objSMTP.LogFilePath = "C:\smtp_log.txt"
objSMTP.ClearLog

' Unlock mailer component
objSMTP.LicenseKey = "put your license key here"

' Specify SMTP server name
objSMTP.ServerName = "localhost"

' Comment next 3 lines if your SMTP server does not
' require SMTP authentication
objSMTP.AuthMethod = 2
objSMTP.UserName = "your mail account name"
objSMTP.Password = "your mail account password"

' Create ADO Connection object
Set objConn  = Server.CreateObject("ADODB.Connection")

' Connect to Access database
objConn.Open "Provider=Microsoft.Jet.OLEDB.4.0; " & _
   "Data Source=C:\Docs\advanced_merge.mdb;"

' Create ADO Recordset object
Set rsEmails = Server.CreateObject("ADODB.Recordset")
  
' Open "emails" table. This table is
' actual data source for the merge
rsEmails.Open "emails", objConn

' Initialize counter to connect to SMTP
' server before sending any e-mails
I = 1

' Loop through the table
Do While Not rsEmails.EOF

  ' Connect to the server. We connect only one time
  ' per 10 sends and reuse existing connection for
  ' subsequent 9 e-mails.
  If I = 1 Then
    If Not objSMTP.Connect Then
      ' Notify user on connection error and exit
      Response.Write "Error #" & objSMTP.ErrCode & ", " & objSMTP.ErrDesc
      Exit Do
    End If
  End If

  ' Set all properties for each e-mail.
  ' This is required because we will reset
  ' the message later to free Attachments
  ' collection.

  ' Plain-text e-mail. Change to 1 to send HTML e-mail
  objSMTP.BodyFormat = 0
  
  ' Specify "From:" and "Subject:". They remain unchanged
  ' for all the e-mails.
  objSMTP.Message.FromAddr = "Site Team "
  objSMTP.Message.Subject = "Invitation"
  
  ' Merge body pattern and actual data
  ' from the database
  objSMTP.Message.BodyText = strBodyPattern
  objSMTP.Message.BodyText = Replace(objSMTP.Message.BodyText, "%%FIRST_NAME%%", rsEmails("first_name"))

  ' Merge body pattern and actual data
  ' from the database
  objSMTP.Message.ToAddr = strToPattern
  objSMTP.Message.ToAddr = Replace(objSMTP.Message.ToAddr, "%%FIRST_NAME%%", rsEmails("first_name"))
  objSMTP.Message.ToAddr = Replace(objSMTP.Message.ToAddr, "%%LAST_NAME%%", rsEmails("last_name"))
  objSMTP.Message.ToAddr = Replace(objSMTP.Message.ToAddr, "%%EMAIL%%", rsEmails("email"))
    
  ' Add attachment if required
  If rsEmails("filename") <> "" Then
    objSMTP.Message.AddAttachment "C:\Data\" & rsEmails("filename")
  End If

  ' Try to send e-mail
  If Not objSMTP.Send Then
    ' Notify user on sending error
    Response.Write "Error #" & objSMTP.ErrCode & ", " & objSMTP.ErrDesc & "<br>"
  End If
    
  ' Reset all message properties to defaults and
  ' clear Attachments collection. If this method
  ' was not called, subsequent messages would also
  ' hold attachments from previously sent messages.
  objSMTP.ResetMessage
    
  ' Proceed with the next record in the table
  rsEmails.MoveNext

  ' Disconnect once 10-th e-mail is sent or passed
  ' the end of the database.
  '
  ' You may adjust number of 10 to the maximum
  ' "sends per connection" value allowed by your
  ' SMTP server.
  If I = 10 Or rsEmails.EOF Then

    ' Disconnect from SMTP server
    objSMTP.Disconnect

    ' Reinitialize counter to force Connect
    ' before next send
    I = 0
  End If

  ' Proceed with the next e-mail
  I = I + 1
Loop
  
' Close the table and the whole database
rsEmails.Close
objConn.Close

' Free database-related objects
Set rsEmails = Nothing
Set objConn = Nothing
%>

接下来会还有邮件合并和批量电子邮件-排队的相关教程,多多关注,不要错过哦!您也可以在评论留下你的经验和建议除了本教程,想要了解更多电子邮件相关产品信息的可以点击此处查看。有更多教程资源等着你!

==========================================

如果想要购买正版授权MailBee.NET Objects的朋友,可以联系

关注慧聚IT微信公众号 ☟☟☟,了解产品的最新动态及最新资讯。

1561953111.jpg


标签:电子邮件

本站文章除注明转载外,均为本站原创或翻译。欢迎任何形式的转载,但请务必注明出处、不得修改原文相关链接,如果存在内容上的异议请邮件反馈至chenjj@pclwef.cn

文章转载自:

为你推荐

  • 推荐视频
  • 推荐活动
  • 推荐产品
  • 推荐文章
  • 慧都慧问
扫码咨询


添加微信 立即咨询

电话咨询

客服热线
023-68661681

TOP