Silicon plans scale as your team does - upgrade anytime.
Yes - if you want the extra features or the unlimited storage, login to any authorized team admin account and enter valid credit card details to upgrade.
Of course. You can have unlimited public chats (chats with those without an account). Note that some features, such a conference calling, are restricted to Teams members only.
You'll automatically get a 30-day free trial to take Silicon on a test drive and see if it fits your needs. You'll be downgraded to the Basic account once the 30 days are up and you don't choose to upgrade.
We make sure that your data stays safe and only visible to you - we (or anyone else outside your team) can't access or view your messages and files.