looking for a solution to send emails in SSL

Tagged: SSl/TLS W500 Arduino EmailSender

This topic has 9 replies, 2 voices, and was last updated 1 year, 2 months ago by Gilles.

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- 12 August 2023 at 13:30 #27118
  Gilles
  Participant
  Hello, almost all internet service providers are or switch to SSL/TLS… (Finally in France for the rest of the world, I’m not sure)
  Only Gmail via sendgrid for the moment remains unencrypted, but you cannot send attachments with this service!
  
  I work with Arduino Mega and w5500 Ethernet shields.
  
  So my question is this impossibility of using SSL/TLS does it come from the hardware (shield or Arduino?) or from the libraries?
  
  I must admit that I don’t understand the subject at all…
  
  In my research I came across this article:
  
  https://github.com/OPEnSLab-OSU/SSLClient
  
  Would this be a solution?
  Or other things?
  Does anyone have a solution?
  THANKS
  - This topic was modified 1 year, 9 months ago by Gilles.
- 6 September 2023 at 11:33 #27312
  Gilles
  Participant
  no one has any idea on the subject? THANKS
- 8 September 2023 at 17:02 #27365
  Renzo Mischianti
  Keymaster
  Hi Gilles,
  the SSLClient is already implemented in the library, but the memory is insufficient for devices like Arduino Mega, It works well with STM32.
  
  STM32: ethernet w5500 standard (HTTP) e SSL (HTTPS) – 5
  
  Here the keyword to enable It on EMailSender.
  
  Bye Renzo
- 8 September 2023 at 17:03 #27368
  Renzo Mischianti
  Keymaster
  Hi Gilles,
  the SSLClient is already implemented in the library, but the memory is insufficient for devices like Arduino Mega, It works well with STM32.
  
  STM32: ethernet w5500 standard (HTTP) e SSL (HTTPS) – 5
  
  Here the keyword to enable It on EMailSender.
  
  Bye Renzo
- 8 September 2023 at 21:14 #27372
  Gilles
  Participant
  Hello, thank you for this sad response!
  I still wanted to try on an Arduino Mega and W5500 shield in SSL, so I uncommented the line you told me in EMailSenderKey.h#L81. Then I tried to compile my sketch of course I had to install the SSLClient library but this one does a #include<vector> .
  So I also installed the vector library but there I always have this:
  C:\Users\PC bureau Gilles\Documents\Arduino\libraries\SSLClient\src/SSLClientParameters.h:31:10: fatal error: vector: No such file or directory
  #include <vector>
  
  Did I miss something?
  THANKS
  PS: suddenly there is no other way to send emails with an Arduino mega and w5500 in SSL?
  - This reply was modified 1 year, 8 months ago by Gilles.
- 9 September 2023 at 09:30 #27374
  Gilles
  Participant
  Hello, is there a way to send emails via ssl from Arduinos mega by adding an stm32 (for 5 Arduinos) or something else, knowing that some emails send attachments from the micro SD of the w5000 shields?
  THANKS
- 12 September 2023 at 12:01 #27387
  Renzo Mischianti
  Keymaster
  You can think of a solution that uses a UDP packet to send message to a central unit It is used to send email.
  The only thing you must check is if all the devices are on the same network.
  Bye Renzo
- 12 September 2023 at 13:04 #27396
  Gilles
  Participant
  Hello, do you have an example somewhere to inspire this (using a UDP packet to send a message to a central processing unit)?
  THANKS
- 15 September 2023 at 10:44 #27400
  Renzo Mischianti
  Keymaster
  Hi,
  you can find more information on this article.
  Bye Renzo
- 9 March 2024 at 10:25 #29894
  Gilles
  Participant
  Hello, for information here are some new reinforcements for sending emails…
  
  https://sendgrid.com/en-us/blog/gmail-yahoo-sender-requirements
  
  Soon we will no longer be able to send emails with EMailSender via Arduinos!
  For sending files which no longer worked with EmailSender and Sendgrid (Gmail).
  I went through an FTP server on Rapsberry, the Arduinos send the message and the attachment to the Raspberry and it is the Raspberry which sends the emails…
  For messages without attachments since no French ISPs now work with EmailSender for security reasons, I only have Sendgrid left (but for how much longer)…
  THANKS
  A+
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