ZeptoMail from Zoho is a transactional email sending service to
send automated emails from your application. Using ZeptoMail's
integration with Joomla, you can send transactional emails to your
customers directly from your account. To know more about using
ZeptoMail, you can refer to our help documentation given below.
How to get started?
To use the ZeptoMail plugin for Joomla, you should have an active ZeptoMail account and should have verified your domain. The status of the emails you send from your Joomla account can be viewed in the Processed emails section of your ZeptoMail account.
Read more https://extensions.joomla.org/browse/new/extension/contacts-and-feedback/email/zoho-zeptomail