Does a production email API key allow a wedding app to send from any address?
No. The provider may require a verified sender or domain, and the credential's permissions can further restrict which addresses the application may use.
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More FAQs in How should email-service credentials be configured during deployment?
Confirm the sender, recipient, message content, and acceptance URL, then complete the intended invitation journey without granting access beyond the configured membership policy.
A timeout can leave delivery uncertain, so careless retries may create duplicate invitations or messages; verify the application's retry and deduplication behavior.
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