Sir,
Email sending from server is not working.
I had discussed this with the namecheap team, they told me that this is because of a third party email service provider.
There is a failed mail delivery message as shown below.
Also, in the email setting option, there is a red flag in advanced settings as shown below.
Please let me know what needs to be done for mail sending to work smoothly.
Waiting for your reply.
Regards,