You can only send emails to 100 unique people in a single day. This is a pretty standard restriction, as that is now entering the realm of spam.
You would be better off signing up for SendGrid or MailChimp or some other email service, and then automate the process using Integromat.
Alternatively, you can also use the SendGrid app in Airtable, but the gigantic problem with the SendGrid app (and ALL apps in Airtable) is that apps can’t be automated at all. So it would be a manual process.
p.s. Note that I am a professional Airtable consultant and a Registered Integromat Partner, and the Integromat link contains my personal referral code. If you have a budget for this project & you need help automating this, feel free to reach out to me through my website at scottworld.com.
