Hi,
We are the developer of ICTFax and ICTBroadcast, we have lot of experience with Fax applications like Email to Fax Gateways, Fax ATA devices. and Fax broadcasting. We can offer you a Cloud-ready / SaaS fax application. with Fax APIs, multi-tenant, rates, and billing support.
Please let us know about your requirements, what kind of termination you want to use VoIP, T.38 or PSTN? How many calls/faxes you want to send on a daily basis. what kind of billing you want to use for your clients per page or per minute. Is there any special features you want, like a fax header, personalized fax. fax retries etc...
Waiting for your kind response.
Regards