Mozilla Corporation may have enough money, but they don't develop Thunderbird. If you used the donation form on this page, you didn't donate to Mozilla Corporation, but to the company developing Thunderbird. So all is fine.
Mozilla Corporation may have enough money, but they don't develop Thunderbird. If you used the donation form on this page, you didn't donate to Mozilla Corporation, but to the company developing Thunderbird. So all is fine.
Mozilla Corporation (for-profit Firefox management org) doesn't take donations, and are mostly funded by selling search placement to Google.
The Mozilla Foundation (non-profit parent org) does take donations. Which they could presumably funnel some of down to thunderbird development, but they chose not to, and now have this other for-profit management org fundraising Thunderbird separately...