Unfortunately, you can’t remove any of the Airtable branding if you use Airtable’s “Send Email” action. You would need to use either the Gmail action or the Outlook action to send the message without branding.

Even better, you can always use Make’s advanced automations & integrations to send emails from ANY email provider, even email accounts from small email providers. Make will never attach any branding to your messages, and it also offers the ability to send full HTML emails as well. Make also has much more advanced automation options than Airtable offers. There is a small learning curve with Make, which is why I created this basic navigation video to help.

Hope this helps! If you’d like to hire an expert Airtable consultant to help you with anything Airtable-related, please feel free to contact me through my website: Airtable consultant — ScottWorld 

Damn, I hadn‘t seen that this was an option. Of course! Thanks

ScottWorld’s answer is absolutely right and worked for me:

“You would need to use either the Gmail action or the Outlook action to send the message without branding.”

Basically when creating the automation, you will want to choose the action step for Gmail to “Send Email” instead of selecting Airtable to “Send Email” -- you just may have to scroll down a bit in the available actions to see it.