You're right that PM limits are also based on activity not rank but it is a different calculation to the posting limits.
Activity | Max recipients | Max recipients if whitelisted | Max PMs per hour | Max PMs per hour if whitelisted | Max PMs per day | Max PMs per day if whitelisted |
0 | 2 | 10 | 1 | 40 | 2 | 120 |
15 | 3 | 10 | 10 | 40 | 15 | 120 |
30 | 5 | 10 | 10 | 40 | 30 | 120 |
100 | 7 | 14 | 20 | 80 | 150 | 600 |
250 | 15 | 30 | 120 | 120 | 300 | 1200 |
500 | 30 | 30 | 120 | 120 | 1200 | 1200 |
You are automatically whitelisted if you buy a copper membership. You don't need to wear the copper membership, just own it. You can also be whitelisted for free by any staff member and a few non-staff, but we're going to need some reason to think that you actually deserve it. Do not ask me for free whitelisting.
Whitelisting is a not a license to spam. You will be immediately banned if you're found spamming, even if you bought a copper membership (and you will not be refunded).