No upgrade or repricing happened. NimbusMail renamed Business to Pro on March 10, 2025, and older invoices can still say Business while the current dashboard says Pro. Your price, limits, support level, and contract terms did not change because of the rename.
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Business was renamed to Pro on March 10, 2025.
Both KB and policy support the rename date.
No price, limit, support, or contract change happened because of the rename.
The draft accurately explains no commercial change.
Older invoices may still say Business while current screens say Pro.
This is exactly the supported customer-facing explanation.