Many temporary email providers can receive ordinary verification emails. Delivery depends on the sending website, the provider, domain reputation, and filtering rules. Some websites block known disposable email domains, so a temporary address may not always work. If a message does not arrive, refresh the inbox and verify that the sending website accepted the address.
For practical use, always review the provider rules and avoid sharing sensitive information through temporary inboxes. A temporary address is best suited to low-risk, short-term interactions.