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Simple TLS/SSL supported SMTP client for Qt5

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  • S Offline
    S Offline
    SGaist
    Lifetime Qt Champion
    wrote on 29 Nov 2013, 12:48 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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    0
    • M Offline
      M Offline
      MichelSM
      wrote on 12 Dec 2013, 16:15 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

      1 Reply Last reply
      0
      • Y Offline
        Y Offline
        yyang2000
        wrote on 11 Mar 2014, 05:52 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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        0
        • G Offline
          G Offline
          gowikel
          wrote on 20 Jul 2014, 23:10 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

          1 Reply Last reply
          0
          • P Offline
            P Offline
            plinioandrade
            wrote on 12 Sept 2014, 18:59 last edited by
            #15

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

            1 Reply Last reply
            0
            • F Offline
              F Offline
              fab_
              wrote on 28 Jul 2015, 20:46 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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              • S Offline
                S Offline
                SGaist
                Lifetime Qt Champion
                wrote on 28 Jul 2015, 22:17 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 29 Jul 2015, 10:15 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!

                  O 1 Reply Last reply 17 Jun 2019, 03:42
                  0
                  • F Offline
                    F Offline
                    fab_
                    wrote on 4 Aug 2015, 09:55 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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                    0
                    • D Offline
                      D Offline
                      DoctorD
                      wrote on 10 Oct 2017, 12:17 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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                      0
                      • MRenM Offline
                        MRenM Offline
                        MRen
                        wrote on 24 Dec 2017, 17:30 last edited by
                        #21

                        Hi, good one !

                        Thanks for sharing !

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                        0
                        • N Offline
                          N Offline
                          nateliv
                          Banned
                          wrote on 29 Dec 2018, 16:45 last edited by nateliv
                          #22
                          This post is deleted!
                          1 Reply Last reply
                          -1
                          • S Offline
                            S Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on 30 Dec 2018, 14:08 last edited by
                            #23

                            Did you check whether your server uses an outdated protocol that is either not supported anymore or disabled by default for security reasons.

                            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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                            • N Offline
                              N Offline
                              Nyrenthia
                              Banned
                              wrote on 5 Feb 2019, 09:11 last edited by Nyrenthia 2 May 2019, 09:12
                              #24
                              This post is deleted!
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                              • S Offline
                                S Offline
                                sanshow
                                Banned
                                wrote on 13 Apr 2019, 08:12 last edited by
                                #25
                                This post is deleted!
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                                • W Offline
                                  W Offline
                                  work
                                  Banned
                                  wrote on 8 May 2019, 10:10 last edited by
                                  #26
                                  This post is deleted!
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                                  • S SGaist
                                    28 Nov 2013, 20:25

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

                                    O Offline
                                    O Offline
                                    opengpu
                                    wrote on 10 Jun 2019, 08:22 last edited by
                                    #27

                                    @SGaist does the Qt-installer with SSL? i donot want to compile Qt by myself

                                    1 Reply Last reply
                                    0
                                    • O Offline
                                      O Offline
                                      opengpu
                                      wrote on 10 Jun 2019, 08:25 last edited by
                                      #28

                                      @fab_ said in Simple TLS/SSL supported SMTP client for Qt5:

                                      Hello everyone.

                                      this post is long long ago, so does this is still work for current new version Qt?
                                      and is there better SMTP Qt lib?

                                      1 Reply Last reply
                                      0
                                      • F fab_
                                        29 Jul 2015, 10:15

                                        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!

                                        O Offline
                                        O Offline
                                        opengpu
                                        wrote on 17 Jun 2019, 03:42 last edited by
                                        #29

                                        @fab_

                                        opengpu 36 minutes ago

                                        anyone ever used libcurl to send email to smtp server?how many milliseconds it need for sending mail one time?is it fast enough to send email by libcurl in mainThread?

                                        i tried this one, it works. but it's slow, as it needs about 3000 milliseconds for sending email one time.
                                        https://github.com/bluetiger9/SmtpClient-for-Qt

                                        aha_1980A 1 Reply Last reply 17 Jun 2019, 06:15
                                        0
                                        • O opengpu
                                          17 Jun 2019, 03:42

                                          @fab_

                                          opengpu 36 minutes ago

                                          anyone ever used libcurl to send email to smtp server?how many milliseconds it need for sending mail one time?is it fast enough to send email by libcurl in mainThread?

                                          i tried this one, it works. but it's slow, as it needs about 3000 milliseconds for sending email one time.
                                          https://github.com/bluetiger9/SmtpClient-for-Qt

                                          aha_1980A Offline
                                          aha_1980A Offline
                                          aha_1980
                                          Lifetime Qt Champion
                                          wrote on 17 Jun 2019, 06:15 last edited by
                                          #30

                                          @opengpu would you please stop spamming every e-mail related thread?

                                          you have a concrete question, so ask it. provide example code so others understand your problem.

                                          Regards

                                          Qt has to stay free or it will die.

                                          1 Reply Last reply
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