Microsoft 365 Developer Blog

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Mailbox 1.9 JavaScript API is Generally Available

Mailbox 1.9 JavaScript API is now generally available. Mailbox 1.9 JavaScript API enables you to add an append-on-send feature in the Mailbox 1.9 API, ensuring a disclaimer or text that needed to be in the message is included. By using plain text, or even HTML, you can programmatically ensure your message is ready for sending.