[SOLVED] Blynk.email() is not working, while Blynk.notify() works

Issues and Errors
1

Push notifications work but, emails doesn’t go through…
It used to work before a week, but stopped sending emails from 18th, April…

Note:-
Blynk App on mobile has both Push and Email widgets

I call the Alert() function with this code:

  if (rh >= HumidThreshold)
  {
    Alert("Humidity", 1, 4);
  }

I’ve set the Buzzer, Push and Email as HIGH…
When the Alert() is executed the Buzzer goes on, I get Push Notification, but I don’t get the email…

Here’s the Alert() code:-

void Alert(String Sensor, int AlertType, int LEDAlert)
{
  if (Buzzer == HIGH)
  {
  digitalWrite(buzzPin, HIGH); // Activate Buzzer
  }
  if (Push == HIGH)
  {
    if (AlertType == 1)
    {
//      Blynk.notify(Location + ": Emergency " + Sensor + " Alert!");   // Notification with Location First
      Blynk.notify("Emergency: " + Sensor + " Alert! @" + Location);  // Notification with Situation First
    }
  }
  if (Email == HIGH)
  {
    if (AlertType == 1)
    {
      Blynk.email("ilak2k@gmail.com", "Emergency: " + Sensor + " Alert! @" + Location, "This is a sensor-triggered alert, from Monitoring System! Investigate specified location");
    }
  }
  Blynk.virtualWrite(LEDAlert, 1023);  // Write HIGH to Virtual Pin 4
}

This used to work and now it doesn’t… What might be the issue here???

2

Hello. First of all - could you please add some tracing or debug info? In other words - are you sure Blynk.email is called? Most probably problem isBlynk.email is not called. Even it was working before.

3

@Dmitriy I’ve included debug info here for your reference… As I said, I keep getting Push Notification every minute. But no emails so far…

Blynk Debug:

2016-04-29 (1).png960Ă—580 13.9 KB

Alert Code:

void Alert(char* Sensor, int AlertType, int LEDAlert)
{
  if (Buzzer)
  {
  digitalWrite(buzzPin, HIGH); // Activate Buzzer
  }
  if (AlertType == 1)
  {
    snprintf(szMsg, sizeof(szMsg), "Emergency: %s Alert! @%s", Sensor, Location);
  }
  else
  {
    snprintf(szMsg, sizeof(szMsg), "%s Surge Detected! @%s", Sensor, Location);
  }
  
  if (Push)
  {
    Serial.print("Sending Notification: ");
//    Serial.println(szMsg);
    Blynk.notify(szMsg);
    Serial.println("Sent Notification!");
  }

  if (Email)
  {
    Serial.print("Sending Email: ");
//    Serial.println(szMsg);
    Blynk.email("ilak2k@gmail.com", szMsg, "This is a sensor-triggered alert, from Monitoring System! Investigate specified location");
    Serial.println("Sent Email!");
  }
  Blynk.virtualWrite(LEDAlert, 1023);  // Write HIGH to Virtual Pin 3
}
4

@Dmitriy I’ve updated my reply with Serial Monitor Screenshot & Alert Code… Why is the email not getting sent? I assure you I’ve included Push Notification Widget & Email Widget…

5

@ilak2k perhaps you mean why isn’t the email being received rather than why isn’t is being sent as Serial Monitors confirms the message was sent.

There can be a host of reasons why an email is not received.

Maybe try a different address with a different service provider.

6

@Costas Also refer to this Debug Report here…
Disconnects everytime email is sent and i keep getting notifications every 10 seconds… Why would it disconnect while trying to send an email?

2016-04-29 (3).png960Ă—580 14.7 KB

7

It doesn’t appear to disconnect every time as your previous Serial Monitor showed it was fine.

Have you tested with email subject of “Email test”?

8

@Dmitriy @Costas It works now! Looks like the length of the email I’m generating is more than the allowed limit…

    snprintf(szMsg, sizeof(szMsg), "Emergency: %s Alert! @%s", Sensor, Location);
    snprintf(szMsg, sizeof(szMsg), "%s Surge Detected! @%s", Sensor, Location);

That’s the subject we just created… And then…

Blynk.email("ilak2k@gmail.com", szMsg, "This is a sensor-triggered alert, from Monitoring System! Investigate specified location");

So, the message goes like this:
Subject:
Emergency: Temperature Alert! @Projector Cabin 456
Content:
This is a sensor-triggered alert, from Monitoring System! Investigate specified location

That’s an unbelievably small allowed limit for an Email Alert! You guys could increase the email interval to even 5 mins allow more length. An email alert every minute is insane! It helps for testing and stuff. But when it comes to actual usage, such frequent emails is not required…

9

@ilak2k Glad it is working. I think this is not Blynk limit…

@vshymanskyy do we have some limit here?

10

@Dmitriy It should be Blynk’s limit… I had to reduce length for my Arduino UNO R3 and Particle Photon… That’s 2 different devices and both don’t work for the full length of the message…
Refer to the attached email screenshot here… I assume, most of the length is taken by the subject… And it leaves me with too less for the content…

2016-04-29 (4).png1920Ă—558 76.4 KB

11

Server doesn’t have any length limit for email. So I believe this is something hardware specific or blynk library specific. @vshymanskyy should know better.

12

@Dmitriy If there’s no length limit for email, I’ll happily generate a report based on the event and include that with the email!

13

Hi. please see this comment [SOLVED] Blynk.email seems limited to 97 characters

14

@ilak2k, did it help?

15

Yes it did! I use an online bytes calculator… get the required memory in KB and I use it for the message to be handled. Solved! Thank you very much @vshymanskyy