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Simple TLS/SSL supported SMTP client for Qt5

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  • M Offline
    M Offline
    maxvanceffer
    wrote on last edited by
    #3

    Great, not so far ago i searched for library like this. And didn't found any easy, not so complicated to use. Thx, i will give it to try.

    But how about, pop3 ?

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    • X Offline
      X Offline
      xcoder
      wrote on last edited by
      #4

      POP3, is a completely different protocol, I can check it out, and maybe write a tutorial on it. So far I have only touched SMTP, which is used for sending the email not receiving.

      Glad that you guys like it.

      Only a biker knows why a dog sticks his head out of a car window.

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      • T Offline
        T Offline
        Time Markov
        wrote on last edited by
        #5

        Hi, Have someone check this tools with using some other SMTP settings (example yahoo)? With gmail it works perfectly, but when it used yahoo SMTP, there is socket timeout error?
        Thanks

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        • X Offline
          X Offline
          xcoder
          wrote on last edited by
          #6

          Hi Markov,

          Strange, I've checked with yahoo as well. Worked great for me, about 2-3 month ago.
          In any case, what settings are you using for yahoo?

          Only a biker knows why a dog sticks his head out of a car window.

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          • T Offline
            T Offline
            Time Markov
            wrote on last edited by
            #7

            Hi,
            I used these settings for yahoo SMTP:
            Mail SMTP server address: smtp.mail.yahoo.com (also with plus.smtp.mail.yahoo.com, doesn't work)
            Mail SMTP user name: Your full Yahoo! Mail email address (including "@yahoo.com")
            Mail SMTP password: Your Yahoo! Mail password
            Mail SMTP port: 465
            Mail SMTP TLS/SSL required: yes
            Thanks in advance
            Tha

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            • M Offline
              M Offline
              MichelSM
              wrote on last edited by
              #8

              hello I used this same project in linux and it worked perfectly

              but when I needed to use it on windows I had this error:

              @
              Starting C:\Users\eng-IEK\Desktop\smtp_multiple_files\build-smtp-Desktop_Qt_5_2_0_MSVC2012_64bit-Debug\debug\smtp.exe...
              No attachments found
              stateChanged QAbstractSocket::HostLookupState
              stateChanged QAbstractSocket::ConnectingState
              stateChanged QAbstractSocket::ConnectedState
              QSslSocket: cannot call unresolved function SSLv23_client_method
              QSslSocket: cannot call unresolved function SSL_CTX_new
              QSslSocket: cannot call unresolved function SSL_library_init
              QSslSocket: cannot call unresolved function ERR_get_error
              error QAbstractSocket::SocketError( 21 )
              QSslSocket: cannot call unresolved function ERR_get_error
              error QAbstractSocket::SocketError( 20 )
              Connected
              C:\Users\eng-IEK\Desktop\smtp_multiple_files\build-smtp-Desktop_Qt_5_2_0_MSVC2012_64bit-Debug\debug\smtp.exe exited with code 0
              @

              anyone have any idea what it might be? maybe some lib?

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #9

                Did you install and openssl on your window machine ? Is your Qt built with SSL support ?

                Interested in AI ? www.idiap.ch
                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                • M Offline
                  M Offline
                  MichelSM
                  wrote on last edited by
                  #10

                  I installed OpenSSL and tried again and could not anyway
                  how do I find out if my Qt is with support for SSL?

                  ALL on linux is easier kkkk

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #11

                    First thing, check that you install OpenSSL 64bit to match your Qt architecture.

                    Then check that your PATH variable contains the folder of the OpenSSL libs

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • M Offline
                      M Offline
                      MichelSM
                      wrote on last edited by
                      #12

                      thanks for the help
                      i have installed the 32bits version, and this don't work

                      now whit the 64bits this worked

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                      • Y Offline
                        Y Offline
                        yyang2000
                        wrote on last edited by
                        #13

                        Hi all,

                        I am working on application using Qt4.84 and the target system is linux LTIB BSP. I want the target system can send out an email to external someone or some kind of mail box via the wifi network or wireless 3G/4G modem. I wonder if this SMTP client can solve my requirement? Since you are using Qt5, is it a problem for me to use Qt4.8.4? If you have any suggestion for the Qt4.8.4 platform, please let me know.

                        Thanks,
                        Bill

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                        • G Offline
                          G Offline
                          gowikel
                          wrote on last edited by
                          #14

                          Thanks, I was looking for a tutorial for do a small application than send some emails when I found this.

                          Thanks a lot

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                          • P Offline
                            P Offline
                            plinioandrade
                            wrote on last edited by
                            #15

                            CONGRATULATIONS TO "This Guy!!!":http://morf.lv
                            He developed the most simple and useful Qt 5 compatible SMTP Client.

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                            0
                            • F Offline
                              F Offline
                              fab_
                              wrote on last edited by
                              #16

                              Hello everyone.
                              The last post is kinda long ago so I'm hoping the someone will read this:

                              I have an application which is required to send emails. So I setup a local mailserver and pulled bluetiger9's code here:

                              https://github.com/bluetiger9/SmtpClient-for-Qt

                              I was able to build a shared .dll file in release Mode. Its 120kb in size.

                              Could someone kindly help me out now on how I can use this dll in my application?
                              Lets say i want to use it in my application in debug Mode. It looks like it isnt enough to put the .dll file in the corresponding folder. Im not sure what extra info to include about what I've done. Please let me know

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #17

                                Hi and welcome to devnet,

                                Do you mean compile your application to use that library or use it when deploying your application ?

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                • F Offline
                                  F Offline
                                  fab_
                                  wrote on last edited by
                                  #18

                                  Hello!

                                  It's both I guess.
                                  I want to use the functions that lib gives me in my code for my application.

                                  When i deploy the application i usually have to provide all neccessary dll files in the same folder (libmysql.dll) for example. So no static linking if thats what you're referring to.

                                  If you look at the github page of my first post. There is an example of its usage right on the front page. I'm trying to achieve to get this example to run properly.
                                  https://github.com/bluetiger9/SmtpClient-for-Qt

                                  After I made my first post I spent the rest of the night tinkering with it and I managed to get something going:

                                  Following this;
                                  https://wiki.qt.io/How_to_create_a_library_with_Qt_and_use_it_in_an_application
                                  I saw that MinGW (I use MinGW)creates a .dll and a .a file. I copied both those files in the folder containing the project where there supposed to be used. I also copied the header files in the same folder.

                                  Here is my .pro file:

                                  QT       += core
                                  QT       -= gui
                                  
                                  TARGET = SMTPEmailTestDLL
                                  CONFIG   += console
                                  CONFIG   -= app_bundle
                                  
                                  TEMPLATE = app
                                  
                                  win32:CONFIG (release, debug|release): LIBS += -L$$PWD/ -lSMTPEmail
                                  else:win32:CONFIG (debug, debug|release): LIBS += -L$$PWD/ -lSMTPEMail
                                  else:unix: LIBS += -L$$PWD/ -lSMTPEmail
                                  
                                  INCLUDEPATH += $$PWD/
                                  DEPENDPATH += $$PWD/
                                  
                                  SOURCES += main.cpp
                                  

                                  This actually enabled me to build and run the programm as seen on bluetiger9's github front page.

                                  But, upon running it either terminates with return value -1073741515 or I get the message that "The process to debug couldnt be adressed: wrong parameter"

                                  Weirdly, although receiving those messages, the programm sometimes actually sends an Email out to my gmail Account (be it with a wrong timestamp) as intended, but sometimes it just doenst.

                                  So I might've done something wrong on the way.
                                  I'm sorry if the information I'm giving is somewhat blurry. I appreciate you taking some time for this SGaist!

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                                  • F Offline
                                    F Offline
                                    fab_
                                    wrote on last edited by
                                    #19

                                    Nevermind, I got it fixed. Turns out you shouldnt rename the dll file after building it. Its name should be the same as specified in TARGET

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                                    • D Offline
                                      D Offline
                                      DoctorD
                                      wrote on last edited by
                                      #20

                                      I am using this with Qt 5.7. The email is successfuly sent but then I get this error in the end :

                                      Server response code: "221"
                                      Server response: "221 2.0.0 closing connection y144sm8277194wmd.18 - gsmtp\r\n"
                                      error QAbstractSocket::RemoteHostClosedError
                                      stateChanged QAbstractSocket::UnconnectedState
                                      disconneted
                                      error "The TLS/SSL connection has been closed"

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                                      • MRenM Offline
                                        MRenM Offline
                                        MRen
                                        wrote on last edited by
                                        #21

                                        Hi, good one !

                                        Thanks for sharing !

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                                        • N Offline
                                          N Offline
                                          nateliv
                                          Banned
                                          wrote on last edited by nateliv
                                          #22
                                          This post is deleted!
                                          1 Reply Last reply
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