§ 1 A fair question to ask
If a tool is going to remember what you copy, 'is it safe?' is the right first question — especially for work that can't afford a leak. Here's an honest read on Maccy against the criteria that matter for confidential use.
§ 2 The checks that matter
The combination is what makes the case: open-source code means the behaviour is verifiable rather than promised; local-only storage means there's no off-device copy to worry about; and exclusions mean the most sensitive copies need never be recorded.
§ 3 Where it isn't magic
No tool removes your own responsibility. Maccy will faithfully store whatever you copy that isn't excluded, so a misconfigured exclude list or an over-large history is still your risk to manage. It doesn't encrypt the on-disk history to a separate key, so device-level protections — FileVault, a strong login, screen lock — still matter. And it isn't a document management system or a substitute for your firm's policies.
Our read: for confidential work on a Mac, a correctly configured local-only, open-source manager is a reasonable choice — paired with full-disk encryption and sensible exclusions. Editorial, not legal advice; confirm against your obligations.
§ 4 Frequently asked questions
Is Maccy safe for confidential work?
For most confidential work it's a reasonable choice: local-only storage, no sync, open-source and auditable, with app exclusions. Pair it with full-disk encryption and a correct exclude list, and follow your firm's policy.
Does Maccy send my clipboard anywhere?
No — it's local-only and does not sync your history to a server.
Can I verify what Maccy does?
Yes. It's open source under the MIT license, so its behaviour can be inspected rather than taken on trust.
Does Maccy encrypt my clipboard history?
Rely on device-level protection — FileVault, a strong login and screen lock — to protect the on-disk history, and use exclusions so the most sensitive copies are never stored.