I like what you're offering. I plan to sign up. But your field prompts on your mail sign-up page infringe on a real company's mark. You offer an example address "@company.com" — yet company.com is a real domain owned by an unassociated real company.

I suggest you use what has been specifically reserved for such examples, namely the IANA-reserved example domain names. As described in RFC 2606 and RFC 6761, a number of domains such as example.com and example.org are maintained for documentation purposes. These domains may be used as illustrative examples in documents without prior coordination with IANA. They are not available for registration or transfer.

Use "firstname@example.com" instead! The way you're doing it now strikes me as unprofessional.