Mail client SSL protocol version

General Discussion
1

Hi,
I use this extension to read mails without user interaction Beta version of a client with support for smtp, pop3 and imap - Extensions - Kodular Community
I had no problems with this extension for months on different devices Android 9 and Android 13, in order to connect to POP3 servers with SSL encryption on port 995.
From september 8 , on Android 13 device I am having an issue with SSL handshake.
Sometimes I have a general error accessing mail store, other times I have a specific error :" JavaMail Exception: javax.net.ssl.SSSLHandshakeException: no enabled protocols; SSLv3, TLSv1, TLSv1.1 are no longer supported and were filtered from the list".

So on Android 13 device I have to disable SSL and to use pop3 port 110.
No issue on Android 9 or 11 with SSL on port 995

I made the following test also:

  • Factory reset on android 13 device (Samsung Galaxy A23)
  • the POP3 connection with SSL on port 995 is OK
  • after some hours the connection to POP3 server is impossible with SSL and I have the error " JavaMail Exception: javax.net.ssl.SSSLHandshakeException: no enabled protocols; SSLv3,................"

On Android Studio Emulator :

  • Android 14 - API 34 is OK
  • Android 15 - API 35 I got error

Google recently changed security policy for SSL versions on Android 13+ ?
Something updated automatically on Android 13 device ?

I can't contact the deverloper of the extension, he is not active on forums from two years.
Probably the extension code have to be updated.

Thank you
Claudio

2

Same issue trying to use SMTP on port 465 with SSL.
Instead using SMTP port 25 without SSL is OK

3

May be best to find a more up to date extension

4

Probably the only updated extension to read emails programmatically is the one coded by SunnyTheDeveloper https://sunnythedeveloper.in/paid-imapclient-extension-to-read-emails-from-imap-server-6-or-inr-350/