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Mail::POP3

The Pop3 retriever allows to get the last, first or all emails from a POP3 server. Each email retrieved (RFC2822) is given as an instance of Message.

While being retrieved, emails can be yielded if a block is given.

Example of retrieving Emails from GMail:

  Mail.defaults do
    retriever_method :pop3, { :address             => "pop.gmail.com",
                              :port                => 995,
                              :user_name           => '<username>',
                              :password            => '<password>',
                              :enable_ssl          => true }
  end

  Mail.all    #=> Returns an array of all emails
  Mail.first  #=> Returns the first unread email
  Mail.last   #=> Returns the first unread email

You can also pass options into Mail.find to locate an email in your pop mailbox with the following options:

  what:  last or first emails. The default is :first.
  order: order of emails returned. Possible values are :asc or :desc. Default value is :asc.
  count: number of emails to retrieve. The default value is 10. A value of 1 returns an
         instance of Message, not an array of Message instances.

  Mail.find(:what => :first, :count => 10, :order => :asc)
  #=> Returns the first 10 emails in ascending order

Attributes

settings[RW]

Public Class Methods

new(values) click to toggle source
    # File lib/mail/network/retriever_methods/pop3.rb, line 37
37:     def initialize(values)
38:       self.settings = { :address              => "localhost",
39:                         :port                 => 110,
40:                         :user_name            => nil,
41:                         :password             => nil,
42:                         :authentication       => nil,
43:                         :enable_ssl           => false }.merge!(values)
44:     end

Public Instance Methods

connection(&block) click to toggle source

Returns the connection object of the retrievable (IMAP or POP3)

     # File lib/mail/network/retriever_methods/pop3.rb, line 102
102:     def connection(&block)
103:       raise ArgumentError.new('Mail::Retrievable#connection takes a block') unless block_given?
104: 
105:       start do |pop3|
106:         yield pop3
107:       end
108:     end
delete_all() click to toggle source

Delete all emails from a POP3 server

    # File lib/mail/network/retriever_methods/pop3.rb, line 92
92:     def delete_all
93:       start do |pop3|
94:         unless pop3.mails.empty?
95:           pop3.delete_all
96:           pop3.finish
97:         end
98:       end
99:     end
find(options = {}, &block) click to toggle source

Find emails in a POP3 mailbox. Without any options, the 5 last received emails are returned.

Possible options:

  what:  last or first emails. The default is :first.
  order: order of emails returned. Possible values are :asc or :desc. Default value is :asc.
  count: number of emails to retrieve. The default value is 10. A value of 1 returns an
         instance of Message, not an array of Message instances.
  delete_after_find: flag for whether to delete each retreived email after find. Default
          is false. Use #find_and_delete if you would like this to default to true.
    # File lib/mail/network/retriever_methods/pop3.rb, line 58
58:     def find(options = {}, &block)
59:       options = validate_options(options)
60:       
61:       start do |pop3|
62:         mails = pop3.mails
63:         pop3.reset # Clears all "deleted" marks. This prevents non-explicit/accidental deletions due to server settings.
64:         mails.sort! { |m1, m2| m2.number <=> m1.number } if options[:what] == :last
65:         mails = mails.first(options[:count]) if options[:count].is_a? Integer
66:         
67:         if options[:what].to_sym == :last && options[:order].to_sym == :desc ||
68:            options[:what].to_sym == :first && options[:order].to_sym == :asc ||
69:           mails.reverse!
70:         end
71:         
72:         if block_given?
73:           mails.each do |mail|
74:             new_message = Mail.new(mail.pop)
75:             new_message.mark_for_delete = true if options[:delete_after_find]
76:             yield new_message
77:             mail.delete if options[:delete_after_find] && new_message.is_marked_for_delete? # Delete if still marked for delete
78:           end
79:         else
80:           emails = []
81:           mails.each do |mail|
82:             emails << Mail.new(mail.pop)
83:             mail.delete if options[:delete_after_find]
84:           end
85:           emails.size == 1 && options[:count] == 1 ? emails.first : emails
86:         end
87:         
88:       end
89:     end

Private Instance Methods

start(config = Configuration.instance, &block) click to toggle source

Start a POP3 session and ensure that it will be closed in any case. Any messages marked for deletion via # or with the :delete_after_find option will be deleted when the session is closed.

     # File lib/mail/network/retriever_methods/pop3.rb, line 125
125:     def start(config = Configuration.instance, &block)
126:       raise ArgumentError.new("Mail::Retrievable#pop3_start takes a block") unless block_given?
127:     
128:       pop3 = Net::POP3.new(settings[:address], settings[:port], false)
129:       pop3.enable_ssl(OpenSSL::SSL::VERIFY_NONE) if settings[:enable_ssl]
130:       pop3.start(settings[:user_name], settings[:password])
131:     
132:       yield pop3
133:     ensure
134:       if defined?(pop3) && pop3 && pop3.started?
135:         pop3.finish
136:       end
137:     end
validate_options(options) click to toggle source

Set default options

     # File lib/mail/network/retriever_methods/pop3.rb, line 113
113:     def validate_options(options)
114:       options ||= {}
115:       options[:count] ||= 10
116:       options[:order] ||= :asc
117:       options[:what]  ||= :first
118:       options[:delete_after_find] ||= false
119:       options
120:     end

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