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import os
from syvel import Syvel


client = Syvel(api_key=os.environ["SYVEL_API_KEY"])


# In a registration handler:
try:
    result = client.check("[email protected]")
    # result.is_risky          — bool
    # result.risk_score        — int (0–100)
    # result.reason            — "safe" | "disposable" | "undeliverable" | "role_account"
    # result.deliverability_score — int (0–100)


    if result.is_risky:
        raise ValueError("Please use a professional email address.")
except SyvelError:
    pass  # fail open — never block a registration if Syvel is unavailable

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