irb(main):001:0> require 'net/imap'
=> true
irb(main):002:0>   imap = Net::IMAP.new('imap.zuhause.org', 993, true)
=> #<Net::IMAP:0x00000805961290 @mon_owner=nil, @mon_count=0, @mon_mutex=#<Thread::Mutex:0x000008059611f0>, @host="imap.zuhause.org", @port=993, @tag_prefix="RUBY", @tagno=0, @parser=#<Net::IMAP::ResponseParser:0x00000805961060 @str="* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Welcome to ZuHause.org\r\n", @pos=122, @lex_state=:EXPR_BEG, @token=nil, @flag_symbols={}>, @sock=#<OpenSSL::SSL::SSLSocket:0x00000805960e08 @io=#<TCPSocket:fd 9>, @context=#<OpenSSL::SSL::SSLContext:0x00000805960fe8 @cert=nil, @key=nil, @client_ca=nil, @ca_file=nil, @ca_path=nil, @timeout=nil, @verify_mode=1, @verify_depth=nil, @renegotiation_cb=nil, @verify_callback=nil, @cert_store=#<OpenSSL::X509::Store:0x000008034bf658 @verify_callback=nil, @error=nil, @error_string=nil, @chain=nil, @time=nil>, @extra_chain_cert=nil, @client_cert_cb=nil, @session_id_context=nil, @tmp_dh_callback=nil, @session_get_cb=nil, @session_new_cb=nil, @session_remove_cb=nil, @tmp_ecdh_callback=nil, @servername_cb=nil, @npn_protocols=nil, @alpn_protocols=nil, @alpn_select_cb=nil, @npn_select_cb=nil>, @sync_close=true, @hostname=nil, @eof=false, @rbuffer="", @sync=true, @callback_state=nil>, @usessl=true, @responses={}, @tagged_responses={}, @response_handlers=[], @tagged_response_arrival=#<MonitorMixin::ConditionVariable:0x00000805960160 @monitor=#<Net::IMAP:0x00000805961290 ...>, @cond=#<Thread::ConditionVariable:0x00000805960138>>, @continuation_request_arrival=#<MonitorMixin::ConditionVariable:0x000008059600e8 @monitor=#<Net::IMAP:0x00000805961290 ...>, @cond=#<Thread::ConditionVariable:0x000008059600c0>>, @idle_done_cond=nil, @logout_command_tag=nil, @debug_output_bol=true, @exception=nil, @greeting=#<struct Net::IMAP::UntaggedResponse name="OK", data=#<struct Net::IMAP::ResponseText code=#<struct Net::IMAP::ResponseCode name="CAPABILITY", data="IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN">, text=" Welcome to ZuHause.org">, raw_data="* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Welcome to ZuHause.org\r\n">, @client_thread=#<Thread:0x00000802d8f3d8 run>, @receiver_thread=#<Thread:0x00000802f391c0@/usr/local/lib/ruby/2.3/net/imap.rb:1109 sleep>, @receiver_thread_terminating=false>