G Suite (formerly Google Apps for Work) users can send up to 200 emails per Mail Merge and up to 1500 emails per day.
On Step 1 All users will receive the message "you have 1500 emails left for this day". This is WizyGmail's sending limit, which is different from Gmail's. Wizy cannot track Gmail's limit as users can still send emails outside WizyGmail.
On Step 2 Users need to check our disclaimer before sending Mail Merge: "I understand that Gmail has a daily message limit and by sending this Mail Merge, I am contributing to this limit."