from property
List<MailAddress> ?
get
from
according to RFC 2822 section 3.6.2. there can be more than one FROM address, in that case the sender MUST be specified
Implementation
List<MailAddress>? get from => _getFromAddresses();
set
from
(List<MailAddress> ? list)
Implementation
set from(List<MailAddress>? list) => _from = list;