- The Gmail sending limits table
- A rolling 24 hours, not midnight
- What counts toward your limit
- The mail merge trap
- Attachments: before and after encoding
- Trial accounts and the 75-day wait
- Phones, SMTP and the relay service
- Receiving limits, and why they're worse to hit
- How to stay under the limits
- My take on Gmail's limits
- Frequently asked questions
A Google Workspace user can send 2,000 messages a day, counted over a rolling 24 hours rather than a calendar day, as of October 2026. Mail merge drops that to 1,500 and trial accounts to 500, and if you go over, you can't send anything new for up to 24 hours, though you can still sign in, receive mail and use other Google services.
The catch is that mail merge, the tool most people use for their biggest sends, has the lower cap: 1,500 messages and 1,500 recipients a day, against 2,000 for ordinary sending. And the 25 MB attachment limit is measured before encoding, while receiving limits are measured after it, so a file that leaves you comfortably under the line arrives bigger than you think.
The Gmail sending limits table
| Limit | Per user, as of October 2026 |
|---|---|
| Messages per day | 2,000 (1,500 for mail merge, 500 on a trial) |
| Recipients per message | 2,000 in total, 500 of them external |
| Recipients per message by SMTP, for POP or IMAP users | 100 |
| Recipients per message by the Gmail API | 500 |
| Recipients per message from Google Workspace Sync for Microsoft Outlook | 100 |
| Total recipients per day | 10,000 (1,500 for mail merge) |
| External recipients per day | 3,000 |
| Unique recipients per day | 3,000, with 2,000 external (500 external on a trial) |
| Auto-forwarded messages per day | 10,000, counted separately |
| Attachment size, Business and Education | 25 MB |
A rolling 24 hours, not midnight
Google applies these limits over a rolling 24 hours, not a clock day. So if you hit the limit at 3pm, waiting until midnight won't reset it. The messages you sent at 3pm drop out of the count around 3pm the next day.
That matters most for anyone who batches outreach. Send a big chunk first thing on Monday and you're still carrying it into Tuesday morning.
What counts toward your limit
More than you'd guess. Messages sent from an alias count against the user who owns the alias. Messages sent by delegates count against the account they're sending from. Even your vacation responder's automatic replies count.
Auto-forwarded messages are the exception. They don't count toward the daily sending limit and have their own cap of 10,000 a day instead.
Total and unique recipients are counted differently, too. Google's own example: five messages to the same ten addresses is 50 total recipients but only 10 unique ones. So a small group you email often eats into your 10,000 total, but barely touches your 3,000 unique.
The mail merge trap
If you send with mail merge, plan around 1,500 messages and 1,500 recipients a day, not 2,000 and 10,000. People see the higher figure, build a list of 1,800, and find the last few hundred never went. My guide on doing a mail merge in Gmail walks through the merge itself.
Attachments: before and after encoding
On Business and Education editions you can attach up to 25 MB. Enterprise Standard is also 25 MB, and Enterprise Plus goes up to 50 MB, but only in web Gmail. That sending limit is measured before encoding.
Receiving limits are measured after encoding, which adds a little over a third to the size. On the receiving side, Enterprise Standard accepts 50 MB and Enterprise Plus 70 MB, with up to 500 attachments per email. So the file you send is not the size that lands, and a recipient with a tighter limit than yours can bounce it. For anything big, sending large files from Gmail is the safer route.
Trial accounts and the 75-day wait
Limits aren't raised during a trial. Once your domain has paid a cumulative total of at least $100, plus the domain cost if you bought the domain from Google, sending limits rise automatically, as of October 2026. Google says that can take up to 75 days, so a new business planning a launch email shouldn't count on the full limits in week one.
Phones, SMTP and the relay service
The Gmail app on a phone follows the web sending limits when it's in Google Sync mode. In IMAP mode, the SMTP limits apply instead, which means 100 recipients per message. The SMTP relay service has its own separate limits.
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Receiving limits, and why they're worse to hit
One account can receive 3,600 messages per hour and 86,400 per day. Hit that and new mail bounces for about 24 hours, and anything sent to you in that window can't be recovered. That's worse than a sending block, because you won't know what you missed.
Google's fix is simple: send logs and automated mail to a Google Group rather than to one person's inbox.
How to stay under the limits
- Budget for 1,500 a day if you use mail merge, and 500 if you're still on a trial.
- Count the unique external people you're emailing, not just the messages. 2,000 unique external recipients is the daily ceiling.
- Check who else sends as you. Aliases, delegates and your vacation responder all draw on the same 2,000.
- Space big sends across the rolling window instead of waiting for midnight.
- Point automated alerts and system logs at a Google Group so they can't flood one inbox.
- Share large files as links instead of attachments when they're anywhere near 25 MB.
My take on Gmail's limits
For a normal working day, 2,000 messages is more than any one person sends, and you'll never notice it. Where it bites is mail merge, trials and shared accounts with delegates. I'd treat Gmail as fine for personal outreach in the low hundreds, and if you're regularly pushing toward 1,500, that's a sign the job belongs in an email platform built for bulk, not your Workspace inbox.
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Frequently asked questions
How many emails can I send per day with Google Workspace?
As of October 2026, 2,000 messages per user per day, counted over a rolling 24 hours. Mail merge is capped at 1,500 and trial accounts at 500.
What happens if I exceed the Gmail sending limit?
You can't send new messages for up to 24 hours, but you can still sign in, receive mail and use other Google services.
Does mail merge have a different limit in Gmail?
Yes. Mail merge is limited to 1,500 messages and 1,500 recipients a day, lower than the standard 2,000 messages.
Do aliases and delegates count toward my Gmail limit?
Yes. Messages sent from an alias, by delegated users and by the vacation responder all count toward the user's limit. Auto-forwarded messages don't.
When do trial sending limits increase?
After your domain has paid a cumulative total of at least $100, as of October 2026. The increase is automatic and can take up to 75 days.
