Hi! Great questions. Here's how it works:

Sending Source
- If you have connected your Gmail or Outlook account via the Integrations menu, newsletters send through your personal Gmail/Outlook account and servers -- just as if you sent them yourself.
- If you have not connected Gmail or Outlook, emails go out through Decile Hub's servers (SendGrid), with your name and reply-to header set to your email address.

Daily Volume Limit
- There is a combined limit of 500 emails per day across all sending activity (newsletters, pipeline emails, etc.). If you have more than 500 contacts and trigger a send, only the first 500 will go out that day.

A Few Things to Keep in Mind
- Because connected accounts send through Gmail/Outlook directly, your own email account's reputation affects deliverability.
- If you are using a newer domain and sending finance-related content to recipients who have not previously received emails from you, there is a higher risk of landing in spam folders.
- Sent emails will also appear in your personal Sent folder if you are connected via Gmail or Outlook, so you can track standard bounce-backs or delivery errors there.

Hope that helps clarify things! Let me know if you have any follow-up questions.