S1 Corporation has multiple customer support departments for our various products and services.

Please access support through the channels listed below:

S1 Branch Automation customer support: Please email FSBGSupport@s1.com, call +1 818.992.3299 or toll-free +1 800.541.6406.

S1 Customer Extranet: For all other S1 products and solutions, please click here to access our new S1 Customer Extranet or call us toll-free +1 877.718.3247.

S1 Online Case Management System: Please click here to access our Online Support Request.

Postilion: Please click here to browse to the Postilion customer services website.