No. secure-transmit pricing is based on transmissions, not seats.

One secure transfer of one or more files to one recipient.

Absolutely. You can send the same files to multiple recipients. Just keep in mind that eachrecipient counts as one transmission for billing purposes. So, sending the same file tothree recipients counts as three transmissions.

You will automatically be charged for another 25% of transmissions and the costsassociated with them. You can then evaluate if you should upgrade going forward.

Technically, files of up to 4TB but the practical limit is tied to the speed of your network.