EmailSender sending mail with Gmail does not work

[Gilles]

Hello, I have a little problem sending mail from an Arduino Mega and a W5500 (or W1500) shield with the Emailsender version library: 3.0.9 or 3.0.11 and Gmail messaging!
With an email on laposte.net no worries.

I configured this in the sketch:

String sender ="Anemometer";
uint16_t SMTP_PORT = 587;
const char* smtp_server = "smtp.gmail.com"; // your mail address smtp server
const char* email_login = "myaddress@gmail.com"; // your sender email address
const char* email_from = "myaddress@gmail.com"; // Your email address
const char* name_from = sender.c_str(); //transformation from string to const char*
const char* email_password = "secure password";

I get this as an error code: 235 :

Insecure client:0
12:54:24.719 -> smtp.gmail.com
12:54:24.719 -> 587
12:54:24.765 -> 220 smtp.gmail.com ESMTP b8-20020a5d4d88000000b002c70e60eb40sm12475582wru.11 – gsmtp

12:54:24.860 -> HELO mischianti
12:54:24.860 -> 250 smtp.gmail.com at your service

12:54:24.908 -> AUTH LOGIN:
12:54:24.908 -> 530 5.7.0 Must issue a STARTTLS command first. b8-20020a5d4d88000000b002c70e60eb40sm12475582wru.11 – gsmtp

12:54:25.047 -> Encoding
12:54:25.047 -> monadresse@gmail.com
12:54:25.094 -> 29
12:54:25.094 -> Q24lsbVzLm1hbmhpBnZvaXJpQk8nbWFpbC5jb2z=
12:54:25.094 -> Encoding
12:54:25.141 -> monadresse@gmail.com
12:54:25.188 -> 29
12:54:25.188 -> 502 5.5.1 Unrecognized command. b8-20020a5d4d88000000b002c70e60eb40sm12475582wru.11 – gsmtp

12:54:25.282 -> Encoding
12:54:25.282 -> motdepasse
12:54:25.329 -> 16
12:54:25.329 -> motdepasseconvertit
12:54:25.329 -> Encoding
12:54:25.329 -> Pl2ionbmtQrmqmyc
12:54:25.376 -> 16
12:54:25.376 -> 502 5.5.1 Unrecognized command. b8-20020a5d4d88000000b002c70e60eb40sm12475582wru.11 – gsmtp

12:54:25.471 -> resp code = 235

Does anyone know how to setup emailSender with Gmail mail?

I can’t!

THANKS

[Renzo Mischianti]

Hi Gilles,
w5500 don’t support TSL, so you can’t use Gmail, other people use service like sendgrid

You can find a lot of information on this topic

Weather radio station with Arduino UNO/MEGA Ethernet problem with EMailSender

Bye Renzo

[Gilles]

For information without really report for (at home in any case) to start the w5500 shield without Ethernet (therefore in fixed IP) it is absolutely necessary to start the clock BEFORE (via an RTC.begin(); command) the Ethernet shield otherwise the shield can only start with the presence of Ethernet!
THANKS

PS: I looked at your link:
Weather radio station with Arduino UNO/MEGA Ethernet problem with EmailSender
I will see if I can create a free send grid account.
THANKS

[Gilles]

Hello,
For information, do you have the list of error codes (with their meaning) that EmailSender can return?
example error code 354, 2, 235,1 ,…

I found the following line of code in your post:
EMailSender emailSend(“apikey”, “SG.FINTOFINTOFINTO.FINTOFINTO”, “sender.mischianti@gmail.com”, “smtp.sendgrid.net”, 25 );

can you please explain to me what some parts correspond to:
* “apikey” should be the login email…
Is this the name you gave to your sendgrid key?

* “SG.FINTOFINTOFINTO.FINTOFINTO” is the sendgrid API key.

* “sender.mischianti@gmail.com” corresponds to the sender email address.
You put the address of the sendgrid account? any one?…

* smtp.sendgrid.net is the smtp server
and finally
* 25 corresponds to the smtp port.

Currently all my different attempts to send an email via sendgrid returns me an error code = 2!
THANKS

[Gilles]

OK, I’ve made some progress, but it still doesn’t work.
I put :

uint16_t SMTP_PORT = 587; //the smtp port 25 don't work!
const char* smtp_server = "smtp.sendgrid.net"; // your mail address smtp server
const char* email_login = "apikey"; // your sender email address
const char* email_from = "somemailaddress@gmail.com"; // Your email address
const char* name_from = sender.c_str(); //transformation from string to const char*
const char* email_password = "sengrid's super long password string";

and especially :
string sender = “Arduino1”;
// the name of Senders that I put in Sendgrid!
suddenly emailsenders no longer sees an error but I don’t receive any email… whether with gmail or orange.fr or laposte.net senders….

I get this as a return:

multiple destination and attachments
20:58:25.520 -> Insecure client:0
20:58:25.567 -> smtp.sendgrid.net
20:58:25.567 -> 587
20:58:25.567 -> 220 SG ESMTP service ready at geopod-ismtpd-6

20:58:25.614 -> HELO mischianti
20:58:25.660 -> 250 Hello, nice to meet you

20:58:25.708 -> AUTH LOGIN:
20:58:25.708 -> 334 xyzzzz

20:58:25.708 -> Encoding
20:58:25.708 -> apikey
20:58:25.708 -> 6
20:58:25.708 -> YXBpa2V5
20:58:25.708 -> Encoding
20:58:25.755 -> apikey
20:58:25.755 -> 6
20:58:25.755 -> 334 GGFzc4dtcmQ0

20:58:25.802 -> Encoding
20:58:25.802 -> password
20:58:25.849 -> 69
20:58:25.849 -> encoded password
20:58:25.942 -> Encoding
20:58:25.988 -> password
20:58:26.034 -> 69
20:58:26.034 -> 235 Authentication successful

20:58:26.081 -> MAIL FROM: <monadressemail@gmail.com>
20:58:26.128 -> 250 Sender address accepted

20:58:26.175 -> RCPT TO: <monadressemail@gmail.com>
20:58:26.221 -> 250 Recipient address accepted

20:58:26.268 -> RCPT TO: <monadressemail@laposte.net>
20:58:26.268 -> 250 Recipient address accepted

20:58:26.315 -> RCPT TO: <monadressemail@wanadoo.fr>
20:58:26.362 -> 250 Recipient address accepted

20:58:26.409 -> DATA:
20:58:26.409 -> 354 Continue

20:58:26.409 -> Message end
20:58:26.504 -> 250 Ok: queued as fSgql6e3R0aCjwX8RNlfgg

20:58:26.549 -> 221 See you later

20:58:26.549 -> resp code = 0

THANKS

[Gilles]

Another little question, have you already managed to send emails from the orange.fr messaging system that I created for you?
For me there is no error message (error code =0), but no receipt of emails, a bit like there with SendGrid…
It seems to me that sometimes I see the email sent in my mailbox but it disappears almost instantaneously on its own and there is no way to find any trace of it…. I can almost believe that I dreamed!
THANKS

[Gilles]

Hello, no news?
Thank You

[Renzo Mischianti]

Hi Gilles,
we can’t know the reason, but I can suppose that the receiver flag as spam and put It in the specified folder or reject It.
Bye Renzo

[Gilles]

,
OK thanks
And do you have a list of error codes returned by email sender? (354, 2, 1, 235 and others…)
THANKS

[Author]

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