Would you mind explaining a bit more over why this has value over and above a google group in collaborative inbox mode?
Annecdotally, I think there's a lot of good problems for a new vendor to solve with a product in this category, but a collaborative inbox is really just the baseline of a solution. Personally, the main issue my team has with collaborative inboxes are not issues with handling who replys to each message, it's an issue of spam. Would love to have a vendor build a solution powerful enough to solve these specific problems:
1. Filtering out automated beg-bounty outreach from any actual security issues by having some form of LLM responder: ideally having a bit of semi-automated back/forth (e.g. approved with a rich Slack button) to help determine if someone is serious or not (after two years of operating, I'm still at 100% of messages (over 1-2 messages per month per company) to security@example.com being spam; suspect over the mid-term it'll still be 98%+).
2. Filtering out spam where people are accidentally reaching out to the wrong company.
3. Filtering out spam where people are trying to sell us products we're not interested in. E.g. we attend conferences, for every actual conference email we get maybe 5 or 6 trying to sell us attendee email lists.