EMailSender-master Library problem to manage email variable

[Adnan Aygunduz]

First of all, thank you so much for creating such a great library.

My problem is:

The code works perfectly.

EMailSender::Response resp = emailSend.send(“xxxxx@gmail.com”, message);

However;

When I use it like this, it gives me an error.

myemail=”xxxxx@gmail.com”

EMailSender::Response resp = emailSend.send(myemail, message);

no matching function for call to ‘EMailSender::send(String*, EMailSender::EMailMessage&)’

Couldn’t figure out the problem. Can you please point to me to the right direction? Thanks.

[Renzo Mischianti]

Hi Adnan,

sorry if I response only now.

You can use a char array pointer

const char* emailToSend = "renzo.mischianti@gmail.com";
EMailSender::Response resp = emailSend.send(emailToSend, message);

I think you use a String variable for myemail, change type.

Bye Renzo

[Adnan Aygunduz]

Hi Renzo,

Thanks a lot. It worked.

I just added .c_str() to my strings to make the conversion.

[windip]

Hi,

first I want to thank you for the great lib! I had to search 2 weeks to find a simple and working way to send e-mails from esp8266!

I send mails to multible adresses. When using an array of const char* everything works fine for me.

const char* mail_to_list[] = {“mail_01@gmail.com”, “mail_02@yx.com”};

If I use:  char* mail_to_list[] = {“mail_01@gmail.com”, “mail_02@yx.com”};

to be able to write the adresses with strcpy() to the variable (from a web interface), I get the error:   “invalid conversion from ‘char**’ to ‘const char**'”

Is there a way, to get multible e_mail adresses from other variables to be sent?

Very thankful for any help,

windip

[Renzo Mischianti]

Hi windip,
I think It’s better if you use an array of String instead of char*, in that situation you receive a warning like
ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

to manage this situation I use a simple String[].

This evening or tomorrow I’m going to release a new version (2.1.4) that can take a String[] or char* [] and convert It inside the library with a converter like

const char** toCharArray(String arr[], int num) {
    // If we ever alloc with new with have to delete
    const char** buffer = new const char*[num];

    for(int i = 0; i < num; i++) {
        buffer[i] = arr[i].c_str();
    }

    return buffer;
}

and

const char** toCharArray(char* arr[], int num) {
    // If we ever alloc with new with have to delete
    const char** buffer = new const char*[num];

    for(int i = 0; i < num; i++) {
        buffer[i] = arr[i];
    }

    return buffer;
}

I think It’s what you need.

Bye Renzo

 

[windip]

Thank you so much for your quick response!
Everything works perfekt now using an array of String[3].

Thanks,

WindiP

[Author]

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