You can use
SendGrid to send your Email within Azure.
If you would like to look into getting unblocked for port 25, your only option is to speak with support. If you would like to speak with support without purchasing a support plan, please email me
at AzCommunity@Microsoft.com with your Subscription ID and a link to this post, and I will create a one-time free support request for your subscription.
If you think your question has been answered, click "Mark as Answer" if just helped click "Vote as
helpful". This can be beneficial to other community members reading this forum thread.
Best regards
Subhash