To add an FTP account to Transmit:
Open Transmit on your Mac.
Visit Favorites and create or edit your site profile as follows:
Favorite Name: (Same as Host name below)
Protocol: FTP with TLS/SSL
Server: (FTP Server on your hosting account’s Info page)
User Name: (Your cPanel username)
Password: (Your cPanel password)
Port: (Leave blank)
Use Passive Mode: On
Remote Path: public_html
Click the Save button.
Double-click the new favorite you’ve just created.
Transmit should now be securely connected to your FTP account!