Gmail and Outlook both cap how many emails you can send each day, but the limits differ by account type. Free Gmail allows up to 500 emails per day. Google Workspace paid accounts allow 2,000 per day. Free Outlook.com allows approximately 300 recipients per day. Microsoft 365 plans allow 10,000 recipients per day per user, plus a new tenant-wide external limit introduced in 2025.
Gmail and Outlook Sending Limits at a Glance
Before you launch your next campaign, use this table to confirm where your account stands.
| Account Type | Daily Sending Limit | Recipients Per Message | SMTP Limit | Notes |
|---|---|---|---|---|
| Free Gmail (browser) | 500 emails/day | 500 recipients | 100/msg via SMTP | Rolling 24-hour window |
| Google Workspace (paid) | 2,000 emails/day | 2,000 recipients | 10,000/day via SMTP relay | 1,500 for mail merge; 2,000 external/day |
| Google Workspace (trial) | 500 emails/day | 2,000 recipients | — | Upgrades after trial period ends |
| Outlook.com (free) | ~300 recipients/day | 100 recipients/msg | — | Dynamic; new accounts start much lower |
| Microsoft 365 / Exchange Online | 10,000 recipients/day/user | 500/msg (up to 1,000 by admin) | — | 30 msg/min; TERRL also applies org-wide |
How Many Emails Can You Send with Outlook?
Outlook’s sending limits depend on the type of account you use — the free consumer service and the business Microsoft 365 plans have very different thresholds.
Outlook.com
Outlook.com (the free consumer account) allows approximately 300 unique recipients per day for established accounts, with a maximum of 100 recipients per message. New accounts start at much lower limits — sometimes as few as 10 to 100 per day — with Microsoft gradually increasing them as your sender credibility builds. Microsoft uses a dynamic, reputation-based system, and exact figures are not publicly disclosed.
Microsoft 365 (Exchange Online) Accounts
All Microsoft 365 business plans — Business Basic, Standard, Premium, and Enterprise E1/E3/E5 — share the same Exchange Online limits, as confirmed in Microsoft’s official Exchange Online limits documentation:
- 10,000 recipients per day per user
- 500 recipients per message (configurable up to 1,000 by an admin)
- 30 messages per minute
There is no higher tier for Enterprise. The widely circulated ‘500,000 recipients per day’ figure has no basis in any official Microsoft documentation and should be disregarded entirely. All Exchange Online plans enforce the same 10,000 recipients-per-day per-user ceiling.
What Is the TERRL? Microsoft’s New Tenant-Wide Limit (2025)
In 2025, Microsoft introduced a new layer of sending restriction called the Tenant External Recipient Rate Limit (TERRL). Unlike the per-user limits above, TERRL caps your entire organization’s external sends per day — across all users combined.
For trial organizations, the TERRL is set at 5,000 external recipients per day. For paid tenants, the limit scales with license count. Microsoft rolled out full TERRL enforcement through April 2026. If your team runs coordinated outreach campaigns, your tenant-level limit may be more restrictive than your individual user limit suggests. Read the full announcement on the Microsoft Tech Community blog, and check with your Microsoft 365 admin for your organization’s specific TERRL.
Gmail Sending Limits
Gmail’s limits are also tiered by account type, and the distinction between browser sends and SMTP sends matters more than most users realize.
How Many Emails Can Free Gmail Send Per Day?
Free Gmail accounts can send up to 500 emails per day on a rolling 24-hour window. Each email can include up to 500 recipients when you send through a browser. The Google support documentation confirms these figures, which apply to the standard consumer Gmail account.
Free Gmail via SMTP: Recipient Limits Explained
When you send through SMTP (for example, via a third-party email client or script), the per-message recipient cap drops to 100 recipients per message. This does not reduce your daily total — you can still send up to 500 emails per day. The 100-recipient cap applies per individual message only. This distinction matters for anyone configuring Gmail SMTP for outreach tools. For a full walkthrough, see Warmy’s Gmail SMTP settings guide.
Google Workspace
Google Workspace paid accounts have higher limits, according to Google’s official Workspace sending limits page:
- 2,000 emails per day (standard paid)
- 1,500 per day for mail merge sends
- 500 per day for trial accounts
- 2,000 recipients per email for standard sends
- Up to 10,000 recipients per day via SMTP relay, with a maximum of 100 recipients per SMTP transaction
- Up to 2,000 external recipients per day (paid accounts)
All limits reset on a rolling 24-hour basis and may change without notice.
Pro Tip: Staying under your technical sending limit is not enough. Both Gmail and Outlook monitor your sending patterns in addition to raw volume. Sending 50 emails at once looks very different to their spam systems than 50 emails distributed over the course of a day. Building sender reputation gradually — not just staying under the cap — is what keeps your account healthy long-term.
Worried about hitting your sending limits? Run a free Email Deliverability Test and see exactly where your emails are landing right now.
How Many Cold Emails Can You Safely Send Per Day?
Knowing the technical limit and knowing your safe sending volume are two different things. Google and Microsoft set hard caps, but exceeding those caps is not the only way to trigger a suspension — sending too fast, too uniformly, or to low-quality lists can result in account flags even when you are well under the daily ceiling.
As a practical starting point:
- New domains: begin with 20 to 50 emails per day and ramp up over 4 to 8 weeks.
- Warmed-up domains (3+ months): 100 to 200 per day is generally safe for cold outreach.
- Google Workspace accounts: take advantage of the 2,000 daily limit, but still spread sends across the day.
Warmy is an AI-driven email warmup platform that manages your send volume gradually to protect your sender reputation and keep you within safe daily limits. Warmy’s Adeline AI builds a personalized warmup schedule for each mailbox, adjusting ramp-up pace in real time across a network of 1M+ real mailboxes. For a full comparison of warmup tools, see Warmy’s best email warm-up tools for Gmail guide.
What Happens When You Exceed Your Sending Limit?
When you hit your daily sending limit, Gmail and Outlook temporarily block your ability to send. For free Gmail, this typically results in a 24-hour suspension of outbound sends. For Outlook.com, the block can last 24 to 48 hours. For Microsoft 365 and Workspace accounts, sends above the limit queue or bounce until the rolling 24-hour window resets.
The more serious risk is not the temporary block — it is the damage to your email sender reputation score. Repeated overages signal spam-like behavior to ISPs, which can lead to permanent throttling, blacklisting, or account suspension even after the window resets.
If you encounter an SMTP rate-limit error specifically, Warmy’s guide to the email rate limit exceeded error walks through the exact causes and fixes.
How to Send More Emails Without Getting Blocked
You have several options for increasing your safe daily send volume:
- Upgrade your account. Moving from free Gmail to Google Workspace raises your daily limit from 500 to 2,000. Upgrading to a Microsoft 365 business plan moves you to Exchange Online’s 10,000 recipients-per-day limit.
- Use a dedicated sending account. Ask your IT admin to provision a dedicated bulk-mailing account with relaxed restrictions, or to temporarily remove limits from your address for a scheduled campaign.
- Verify your Outlook account. Confirming your Outlook.com account via SMS can temporarily lift some restrictions for new or unverified accounts.
- Warm up your domain properly. Rather than hitting your ceiling on day one, use a warmup tool to build your sending reputation gradually. Warmy’s guide to warming up new domains covers the recommended timeline.
- Use a dedicated mailing service. Services designed for bulk outreach distribute your sending load across the day, protecting your mailbox reputation and avoiding sudden-spike flags.
For pre-send content checks, Warmy’s free Template Checker scans your email for spam trigger words and formatting issues before you hit send. For Outlook SMTP configuration, Warmy’s Outlook SMTP settings guide covers the setup in full.
Conclusion
Email is essential for both communication and outreach, but every provider sets hard limits on how many you can send each day. Free Gmail caps at 500 emails per day. Google Workspace paid accounts allow up to 2,000 per day. Outlook.com holds established free accounts to approximately 300 unique recipients per day. All Microsoft 365 plans — including Enterprise — cap individual users at 10,000 recipients per day, and since 2025 your organization’s total external sends are also subject to a tenant-wide TERRL limit.
For small-scale senders, these limits are rarely a concern. For teams running active outreach, staying within them requires the right account type, proper domain warmup, and smart send scheduling.
Start your free Warmy trial and let Adeline AI build your sender reputation automatically — no credit card required. Or book a demo to see how Warmy protects your deliverability at scale.
