.PAY domain
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Yes. .PAY can fit invoice-payment portals because it tells customers the link is about paying. Search options such as brand-specific or invoice-related labels on domain.pay: https://domain.pay/domains. Confirm availability and premium status before adding the URL to invoices.
You can still pursue kessa.pay without a trademark by using a standard first-day pre-order rather than trademark-priority registration. A registered mark, if you have one, would let you use a TMCH SMD file for earlier access. domain.pay supports both paths at https://domain.pay/register.
TMCH is the Trademark Clearinghouse. For .PAY priority registration, the trademark record must be validated and the registrant needs a matching SMD file. domain.pay can help start the fast-track or submission path: https://domain.pay/register. Begin early because TMCH handling takes time.
Amazon Registry Services operates the .PAY registry and defines the priority rules, but you submit your SMD for kessa.pay through NicNames as your registrar. NicNames validates the SMD and passes the qualifying claim to the registry. You do not deal with Amazon Registry Services directly for kessa.pay. Register via NicNames at https://domain.pay/register.
The .PAY LRP policy does not make owning a domain a financial license. LRP1 eligibility is tied to conducting online payment transactions through an approved Payment Service Provider or third-party payment processor and payment-related use. Use domain.pay for the domain path: https://domain.pay/register; ask counsel about licensing. Treat this as domain-registration guidance, not legal advice on money-transmission or financial-services licensing.
Availability is checked live and re-verified before payment. Pre-orders are first-day registration attempts — registration is not guaranteed; 100% credit toward another domain (or 80% cash refund) if unsuccessful.