Email address

Solved
1

Hi all,
I’m trying to use a string variable to contain an email address looked up from an SD card file.
If I code it just as advised, it compiles fine. But, if I replace "email@somewhere.com" with a string variable eMailAddress, the compiler chokes.
Ideas?
Thanks in advance.
Jim-

PS: Blynk is the coolest ever!

2

Search this forum for keywords like email and String… there are various procedures to building a single string from multiple sources prior to emailing it. It is actually an Arduino code thing, not specific to Blynk, so Googling how strings work is also advisable.

3

Well, if the compiler kicks out an error when a string variable is used as opposed to a literal string, does it matter how the string was built?

4

Check your compiler error. I am not super savvy on String theory :stuck_out_tongue_winking_eye: I Google a lot to figure it out and keep trying till it works.

For example, this is what I have in one of my projects… note how I built up the body before processing it in the email command.

void StartUpEmail()
{
  timeDisplay();
  dateDisplay();
  String emailAddress = "xxxxxxxxxx@gmail.com";
  String subject = "Mega CodeShield Started";
  String body = "Your CodeShield progect on the Mega has started at " + String(currentTime) + " on " + String(currentDate);
  Blynk.email(emailAddress.c_str(), subject.c_str(), body.c_str());
}
5

I’ll give it a try.
Thanks!
J-

6

BTW, a string entry widget would be nice.
One can use the terminal as such but it would be really nice to have separate entries like: Fname, Lname, email…
When a button is pushed it can consolidate all and create a record via SD.

7

There is a text input widget added to the latest Android Blynk app.

8

Cool!
Any estimate on iOS version?

9

In a week or so.

10

@Gunner, the code you provided worked and it’s sending out emails.
Thanks!