Depends on your connected provider:
- Gmail free (`@gmail.com`) — 500 mails/day
- Google Workspace — 2,000 mails/day
- Outlook personal (`@outlook.com`, `@hotmail.com`) — about 300/day (Microsoft varies)
- Microsoft 365 (business) — 10,000/day
- IMAP — whatever your provider allows (varies widely)
For larger campaigns (10,000+ mails) we recommend a specialized transactional provider (Resend, SendGrid, Postmark). You connect those instead of your personal mailbox.