sendinblue email confirmation email is not sent

sendinblue plugin has been configured successfully

by default smtp 587 port is used, and on test email send there is an error message:
"An error occurred while attempting to establish an SSL or TLS connection. When connecting to an SMTP service, port 587 is typically reserved for plain-text connections. If you intended to connect to SMTP on the SSL port, try connecting to port 465 instead. Otherwise, if you intended to use STARTTLS, make sure to use the following code: client.Connect ("smtp-relay.sendinblue.com", 587, SecureSocketOptions.StartTls);"

after changing smtp port to 465 test email send works fine and that test email is received.
but email confirmation email is never received even though a task  completed successfully  in /Admin/QueuedEmail/List

p.s. store link is correct, there is no any error log and emails are actually sent while debugging , but this automated email is not received

RE:  " a task  completed successfully  in /Admin/QueuedEmail/List"
Do you see the email in the List immediately when you go to the QueuedEmail/List page, or do you only see it when you select the option for "Load not sent emails only"?
(Are other types of emails being sent?)

when "Load not sent emails only" is checked nothing is shown there anymore.
so actually email is sent and system recognizes them as successfully sent.
I have just checked
"Order receipt" and "Purchase Receipt for Order" email have been received
the problem is only with email confirmation email, maybe because it contains non static link idk , thats strange

Check your spam/junk folder

of course i have checked , nothing , looks like sendinblue  issue

Leggo24 wrote:
And when "Load not sent emails only" is NOT checked, do you see the email in the queue?

New York wrote:

yes ,  and 'Sent on' date is set,  after account activation there is a welcome email and that one is also sent :D idk whats wrong with email validation email

If emails in the queue have "'Sent on' date is set", then the email is successfully getting to your email server host (e.g. SMTP).  So, if you are receiving some emails, but not others, then either your host is preventing them (example), or your client is marking them as spam/junk.

yeah something like that,   with another account that emails is sent and alwas in spam , so its not nop issue at all, thanks for your replays New York, freedom

Error sending e-mail. An error occurred while attempting to establish an SSL or TLS connection.

When connecting to an SMTP service, port 587 is typically reserved for plain-text connections. If
you intended to connect to SMTP on the SSL port, try connecting to port 465 instead. Otherwise,
if you intended to use STARTTLS, make sure to use the following code:

client.Connect ("smtp-relay.sendinblue.com", 587, SecureSocketOptions.StartTls);

I had to set port to 465 on table EmailAccount if EnableSsl is true.
Under EmailAccount
set port to 465 EnableSsl True
or
set port to 587 EnableSsl False