Gmail sending limits calculator: Gmail, Workspace and Outlook per day
Gmail sending limits are 500 emails a day for a personal Gmail account and 2,000 messages per user per day for Google Workspace (500 on a trial). Microsoft 365 allows 10,000 recipients per mailbox per day, and Outlook.com 5,000 for Microsoft 365 subscribers. Pick an account above to see which limit caps you and how many inboxes your volume needs.
Example value. Use your own target.
1 for individual emails, as in cold outreach. More for an email with several people in To, Cc or Bcc.
- Most one inbox can send
- 2,000 / day
- Inboxes at that ceiling
- 1
- Limit that decides it
- Messages per user per day
- Recipients per email allowed
- 2,000
On Google Workspace (paid), one-recipient emails are capped at 2,000 a day per inbox by the "messages per user per day" limit (2,000). Sending 1,000 a day needs at least 1 inbox running at that ceiling.
These are ceilings that trigger a block, not safe cold email volumes. For cold outreach, plan a much lower pace per inbox with the cold email inbox calculator.
Every published limit for this account
- Messages per user per day
- 2,000
- Total recipients per day
- 10,000
- External recipients per day
- 3,000
- Unique external recipients per day
- 2,000
- Recipients per message (500 external)
- 2,000
- If you go over: The user is blocked from sending for up to 24 hours; they can still receive mail. Accounts that send spam can be suspended.
- Mail merge is limited to 1,500 a day.
- Recipients per message: 2,000 in total, of which at most 500 external.
- Limits apply over a rolling 24 hours and can change without notice.
- Source: Gmail sending limits in Google Workspace, checked 16 October 2026.
Next step
Limits cap volume. Bounces cap reputation, at any of those 1 inbox.
Google asks senders to keep spam complaints under 0.3%, and every hard bounce from an address that doesn't exist counts against the inbox that sent it. Remove the dead addresses before you send: $29.99 a month, unlimited.
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Sample result
A paid Workspace mailbox sends 2,000 a day, so 5,000 a day needs 3 mailboxes.
- Mailboxes needed
- 3
- Per mailbox a day
- 2,000
- Binding limit
- Messages per user per day
What this means for you
Split sending across mailboxes so none hits its daily cap and gets stopped mid-send.
- Five account types with published limits
- Finds the limit that binds first
- Counts external and new recipients
- Each limit linked to the provider's page
- Sending limits
- Mailboxes
- Daily cap
By SimpleVerifier Team · Last updated · Runs in your browser; nothing you paste is sent to us
How to check your Gmail or Outlook sending limit per day
- Choose the provider and account type you send from.
- Enter how many emails you want to send a day and how many recipients each one has. Cold outreach is usually one recipient per email.
- Leave "recipients are outside my organisation and new" ticked for cold email, so the external and new-recipient limits apply.
- Read the ceiling per inbox, the limit that sets it and how many inboxes your volume needs at that ceiling. The full list of limits and the source are below the result.
Example
- You enter
- A paid Google Workspace account, 5,000 emails a day, one new external recipient per email.
- You get
- Each mailbox can send 2,000 a day, set by the messages-per-user-per-day limit, so 5,000 a day needs 3 mailboxes. Limits as read on 16 Oct 2026.
- Limits
- No limit; runs in your browser.
What is Gmail's sending limit per day?
A personal Gmail account can send 500 emails a day, with at most 500 recipients per email, and sending is usually restored within 1 to 24 hours if you go over (Gmail Help). For Google Workspace, Google publishes a fuller set (Gmail sending limits in Google Workspace): 2,000 messages per user per day, 10,000 total recipients, 3,000 external recipients and 2,000 unique external recipients a day, and 2,000 recipients per message with at most 500 external. Mail merge is limited to 1,500 a day.
Trial Workspace accounts get 500 messages and 500 unique external recipients a day. Going over a Workspace limit blocks the user from sending for up to 24 hours; they can still receive mail. When the limit is hit, Gmail usually rejects further messages with 550 5.4.5, daily sending limit exceeded. Message size is a separate limit: 25 MB including attachments for personal Gmail (Gmail Help).
What are the Outlook sending limits per day?
Outlook.com allows Microsoft 365 subscribers 5,000 recipients a day, 500 per message and 1,000 "non-relationship" recipients, people you haven't emailed before (Sending limits in Outlook.com). Free accounts get less, and Microsoft doesn't publish how much.
A Microsoft 365 business mailbox is limited to 10,000 recipients a day, 30 messages a minute and up to 1,000 recipients per message, which admins can lower (Exchange Online limits). Tenants also have an external recipient limit that grows with licences, capped at 5,000 a day for trial tenants.
Which sending limit actually caps you?
It depends on who you're emailing. For cold email, one recipient per email and every recipient new, the tightest Workspace limit is unique external recipients, 2,000 a day, which happens to equal the message limit. On Outlook.com it's the 1,000 non-relationship recipients, far below the 5,000 headline. If each email goes to several people, a recipient limit divided by recipients per email binds first. The calculator works through each limit and shows the one that decides it.
In a spreadsheet, with the daily message limit in A2, a daily recipient limit in B2 and recipients per email in C2, the ceiling is =MIN(A2,INT(B2/C2)). With your daily target in D2 and that ceiling in E2, inboxes needed is =ROUNDUP(D2/E2,0).
When does the Gmail sending limit reset?
It doesn't reset at a set time of day: Google and Microsoft both count over a rolling 24 hours, so each message counts against the limit until 24 hours after it was sent. A burst at 9am still counts at 8am the next morning. Microsoft's example: send to 5,000 recipients at 9:00, 2,500 at 10:00 and 2,500 at 11:00, and the mailbox can't send again until 9:00 the next day.
How do I increase my Gmail sending limit?
You can't raise the limit on a personal Gmail account; the only route to a higher limit is a different account type. A paid Google Workspace account allows 2,000 messages a day. Trial accounts don't get higher limits during the trial: Google raises them automatically once the domain has paid at least $100, which can take up to 75 days.
If you need more than one mailbox can send, the honest answers are more mailboxes at a modest pace or a sending service built for volume, not tricks to get round a limit.
Should you send up to the sending limit?
No. These limits exist to stop abuse, and hitting them gets the account blocked. They say nothing about how much cold email an inbox can send and still reach the inbox; that's decided by reputation, complaints and bounces. Google's sender guidelines ask senders to keep spam complaints below 0.3%, and Microsoft says Exchange Online isn't designed for bulk mail at all. For cold outreach, plan a much lower pace per inbox with the cold email volume calculator, and read how many cold emails per day per inbox for the reasoning.
If you send marketing mail to large lists, use an email service provider built for it rather than adding mailboxes to get round a limit. Either way, sending to addresses that don't exist raises bounces on whichever inbox or IP you use, so verify the list first.
How do Gmail and Outlook sending limits compare?
| Account | Per day | Per message | New or external recipients |
|---|---|---|---|
| Gmail (personal) | 500 emails | 500 recipients | Not published separately |
| Google Workspace (paid) | 2,000 messages, 10,000 recipients | 2,000 (500 external) | 3,000 external, 2,000 unique external |
| Google Workspace (trial) | 500 messages | As paid | 500 unique external |
| Microsoft 365 | 10,000 recipients | Up to 1,000 | Tenant external limit, 5,000 on trial |
| Outlook.com (Microsoft 365 subscriber) | 5,000 recipients | 500 | 1,000 non-relationship |
All counted over a rolling 24 hours. Sources: Google's Gmail Help and Workspace Admin pages, Microsoft Learn and Microsoft Support, linked below.
Who uses this tool, and for what?
- Cold emailers
- See which limit really applies to one-to-one outreach to new people, such as Outlook.com's 1,000 non-relationship recipients, before planning volume with the cold email volume calculator.
- Marketers
- Check whether a newsletter or announcement fits inside a mailbox's limits at all, or needs an email service provider instead.
- IT admins
- Answer "why was I blocked from sending?" with the published number and source for the user's account type, including trial Workspace and Microsoft 365 tenants.
- Recruiters
- Plan candidate outreach from a personal Gmail or Outlook account without tripping the daily or per-message recipient limits.
What can’t this tool tell you?
- The numbers are the providers' published limits, read on the date shown on the page. Google and Microsoft change them without notice.
- Free Outlook.com accounts and new accounts have lower limits that Microsoft doesn't publish, so the calculator can only show the subscriber figures.
- Admins can set lower limits than the published maximums, and SMTP relay, Apps Script and third-party tools have their own quotas.
- A ceiling isn't a safe sending pace. Staying under the limit doesn't mean mail reaches the inbox.
Common questions
- How many emails can I send per day with Gmail?
- A personal Gmail account can send 500 emails a day, each to at most 500 recipients. Google Workspace accounts can send 2,000 messages a day per user, or 500 on a trial, with separate limits on recipients.
- What is the Outlook sending limit per day?
- Outlook.com allows Microsoft 365 subscribers 5,000 recipients a day, 500 per email and 1,000 recipients they haven't emailed before. Free accounts get lower, unpublished limits. A Microsoft 365 business mailbox allows 10,000 recipients a day.
- What is the limit of recipients in Gmail?
- 500 recipients per email for a personal Gmail account. Google Workspace allows 2,000 per message, of which at most 500 can be outside your organisation, and lower per-message limits apply when you send through POP or IMAP (100) or the Gmail API (500).
- What happens if I go over the Gmail sending limit?
- Gmail blocks sending with a message saying you've reached a limit. Personal accounts are usually restored within 1 to 24 hours; Workspace users are blocked for up to 24 hours. You can still receive mail. Accounts that send spam can be suspended.
- When does the Gmail sending limit reset?
- Not at midnight. Google and Microsoft both count over a rolling 24-hour window, so each message counts against the limit until 24 hours after it was sent.
- How do I increase my Gmail sending limit?
- Move to a different account type. Personal Gmail is fixed at 500 a day; paid Google Workspace allows 2,000 messages per user. Workspace trial limits rise automatically once the domain has paid at least $100, which can take up to 75 days.
- What is the Gmail sending size limit?
- 25 MB for a personal Gmail account, counting the message and attachments together. For Workspace, admins set the limit; Google lists 25 MB for Business editions and up to 50 MB for Enterprise Plus on the web. Larger files go as Google Drive links.
- Is there a Gmail sending limit per hour?
- Google's published Gmail limits are per day and per message, not per hour. Microsoft 365 does publish a rate limit: 30 messages a minute per mailbox. Sending in sudden bursts can still trigger temporary rate-limit deferrals from receiving servers.
- Can I send cold email up to these limits?
- You can, but you'll lose the inbox. The limits are abuse ceilings. Cold email platforms advise tens of emails per inbox per day, spread across several inboxes and domains, because complaints and bounces damage reputation long before a sending limit is reached.
Sources
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