Why Sending Limits Matter
Every email provider imposes sending limits to prevent spam abuse. Exceeding these limits will get your account suspended, hurt your domain reputation, and make your emails land in spam. Understanding the limits — and how to work around them safely — is essential for any cold email operation.
Gmail Sending Limits
| Account Type | Daily Limit |
|---|---|
| Free Gmail (@gmail.com) | 500 emails/day |
| Google Workspace (paid) | 2,000 emails/day |
| Gmail API | 10,000 units/day |
Important: These are Google's technical limits. For cold outreach, you should stay well below them:
- New accounts (0–30 days): max 20–30 emails/day
- Warming accounts (30–60 days): max 50–100 emails/day
- Established accounts (60+ days): max 150–200 emails/day
Outlook Sending Limits
| Account Type | Daily Limit |
|---|---|
| Free Outlook.com | 300 emails/day |
| Microsoft 365 (paid) | 10,000 emails/day |
For cold email, treat Outlook accounts the same as Gmail:
- New accounts: 20–30/day
- After 60 days of warmup: 100–150/day
Custom SMTP / Own Domain
With a custom domain and a dedicated mail server (e.g., via Postmark, SendGrid, or self-hosted), limits are much higher — but reputation still matters.
- Recommended limit per domain: 300–500/day after full warmup
- Always use inbox rotation across multiple domains for high-volume sending
How Leads Genie Handles Sending Limits
Leads Genie automatically:
- Respects per-account daily limits you set
- Rotates sending across multiple accounts so you can scale safely
- Spreads emails throughout the day (no bulk sends at 9:00am sharp)
- Pauses sending if bounce rates exceed safe thresholds
The Right Way to Scale Volume
The only safe way to send more emails is to add more sending accounts — not to increase the volume on a single account.
| Target Volume | Accounts Needed |
|---|---|
| 500 emails/day | 3–5 accounts |
| 2,000 emails/day | 15–20 accounts |
| 10,000 emails/day | 60–80 accounts |
With Leads Genie, you can connect unlimited sending accounts and distribute your campaigns across all of them automatically.