WHY is sendemail to=$mail$ not working ?

[lifekis]

hello, 

sendemail can not work variable fields.

example,

index=mail
| table id domain
| eval email=id."@abc.com"
| sendemail to="$email$" subject="test" sendresult=true inline=true message="test"

>> command="sendemail", {} while sending mail to:

index=_internal email

>> ERROR sending email. subject="test", results_line="None", recipients="[]", server="localhost"

why can't I identify my email address?

it works normally when i enter email address.

[ITWhisperer]

The way you are using it, $email$ is notation for a token, not a field - have you tried

| sendemail to=email subject="test" sendresult=true inline=true message="test"

[lifekis]

The following information is output:
before: ERROR sending email. subject="test", results_line="None", recipients="[]", server="localhost"
after: INFO sending email. subject="test", results_line="None", recipients="[email]", server="localhost"