General Caster - casting more than one email address

Hi gang
I am using General Caster to cast email addresses into a column that I can use for automating emails. However, if I add more than one email to the mirror column (which shows up fine), then General Caster doesn’t cast the second one, it just remains with the first email that I mirrored. Is there any way to get it to pull both / the entire cell across? @rob can you help?