Available Options to send Mass Emails from Dynamics-365(On-prem)

Hi All,

Currently we are working with Dynamics-365(On-prem). We are planning to have Server Side Sync using Exchange Server for email communications. 

> Out look has daily email limitations, Users allowed to send maximum 300 emails per day (and no more than 100 recipients per message), through your Outlook.com email account.

> Please suggest available ways to send mass emails from CRM.

I am a newbie to this Email Configuration. Please help me with your valuable suggestions.

Thanks in advance.

Regards,

Swathi J