Question

我正在尝试向多个收件人发送电子邮件：

class SubscriberMailer < ApplicationMailer
  default from: "email@gmail.com"
  default to: Subscriber.all.map { |sub| sub.email }

  def newsletter(subscriber)
    @subscriber = subscriber
    mail subject: "New newsletter"
  end
end

在NewslettersController中：

def send(newsletter)
  @subscribers = Subscriber.all
  SubscriberMailer.newsletter(@subscribers).deliver
end

我收到错误：

ArgumentError in NewslettersController#index
An SMTP To address is required to send a message. Set the message smtp_envelope_to, to, cc, or bcc address.

感谢您的帮助！

Answer 1

更改您的default to:：

class SubscriberMailer < ApplicationMailer
  default from: "email@gmail.com"
  default to: Subscriber.pluck(:email).join(', ')

  # some code here
end

Answer 2

不是For Each c In Sheet14.Range("A2:A" & Sheet14.Range("A" & Rows.Count).End(xlUp).Row) On Error Resume Next 'Populate level 1 Set cRoot = .AddRoot(sKey:=c.Value2, vCaption:=c.Value2) Set cExtraNode = cRoot.AddChild("ML_" & c.Value2, "Meilensteine") 'Populate level 2 Set cNode = cRoot.AddChild(c.Offset(, 1).Value2, c.Offset(, 1).Value2) 'Populate level 3 If cNode.Level = 2 Then Set cNode = cNode.ParentNode If Not IsEmpty(c.Offset(, 2).Value2) Then Set cNode = cNode.AddChild(c.Offset(, 2).Value2, c.Offset(, 2).Value2) End If 'Populate level 4 If Not IsEmpty(c.Offset(, 3).Value2) Then If cNode.Level = 2 Then Set cNode = cNode.AddChild(c.Offset(, 3).Value2, c.Offset(, 3).Value2) Set cNode = cNode.ParentNode ElseIf cNode.Level = 1 Then Set cNode = cNode.Child.AddChild(c.Offset(, 2).Value2, c.Offset(, 2).Value2) Set cNode = cNode.Child.AddChild(c.Offset(, 3).Value2, c.Offset(, 3).Value2) Set cNode = cNode.ParentNode End If End If Next

SMTP中的某些内容无效。你使用真实的工作地址吗？如果没有，请尝试使用。

如果所有电子邮件都是真实的，那么您可以尝试类似

的内容

Subscriber.all.map { |sub| sub.email }

希望它有所帮助！

使用SMTP的Rails Action Mailer ArgumentError

2 个答案: