Why row filter doesn't flow the variable to send email in KNIME?

Hi Team

Would like to know is row filter doesn’t flow with the variable ?

There is scenario where I have to add all the columns from DB query–>Row filer to send email and also there are few columns I need to add in HTML format .

Example 10 columns are there and 10 should flow to send email via Row filter variable and 5 should flow via html format to send email but I am not able to see them in send email though variable port .

Please let me know if you need any further details