SMS to Mail can be sent to ANY recipient. The Abilis SMTP can send mails:
To the SMTP server resolved by MX record of DNS;
To a SMTP relay server (e.g. That of ISP or company).
Not in current implementation. Sender may specify at beginning of SMS one or more recipients separated by comma and SMS will be sent to those recipients.
Yes. In Email to SMS a message can be splitted in up to 4 SMS (MAX-SMS-SPLIT parameter [default value 1]). In SMS to Email several messages can be reassembled, the limit of the mail (including headers) is 2048 byes.
Yes. The CTISMS OUT routing table allows to choose the outgoing port, depending on the number to which the message has to be sent and/or the sender's email.