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How to verify office 365 email address using API

Khapre, Hitesh 0 Reputation points
2023-01-25T23:22:00.93+00:00

How can I verify and make sure that the email address I input is correct/active before I send an email to it? Do we have any REST API that I can use? I am looking to verify email addresses with domains other than my own email address domain.

Thank you in advance.

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  1. Vasil Michev 97,931 Reputation points MVP
    2023-01-26T08:00:47.6266667+00:00

    You cannot, there is no way for Office 365 (or any system) to validate external addresses. Only after sending a message and observing the server reply you can determine whether an external address is valid or no.

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