Các giới hạn và chính sách của Gmail

To help keep systems healthy and your account safe, Google limits the amount of bandwidth, storage space, server requests, and emails that users can send or receive in their Google Workspace account. These limits don’t inhibit normal email use, but are designed to help identify any misuse of Gmail.

Best practices for Google Workspace Gmail accounts #

Best practices for Google Workspace Gmail accounts.

If you use Gmail for work or school, follow the guidelines in this article to get the best Gmail performance.

• Avoid bulk operations. Select less than 1,000 messages at a time when you delete emails, discard trash, apply labels, or archive messages.
• Avoid bulk operations. Select less than 1,000 messages at a time when you delete emails, discard trash, apply labels, or archive messages.
• Use filters to narrow or target searches in Gmail. You can also use filters to automatically sort and apply labels to emails.
• Reduce labels. Too many labels can slow down your account. Use less than 500 labels (including nested labels) and try to use search and filters to find messages. When you switch to a work or school account, combine your mail folders before you move old email into Gmail. Also, try using multiple labels per message instead of creating exclusive labels.
• Reduce Inbox messages. Some features won’t work if you have too many messages in your Inbox. For example, you can’t use the right-click menu when your inbox has over 250,000 messages.
• Know the limits. To help keep your account safe, Google limits the amount of bandwidth, storage space, server requests, and emails that you can send or receive in your work or school account. These limits are designed to help identify any misuse of Gmail. For more information, see:
  • Sending limits
  • Storage limits
  • Request limits
  • Bandwidth limits
  • Receiving limits
  • Sync limits

Gmail sending limits in Google Workspace #

To keep systems healthy and accounts safe, Google limits the number of Gmail messages users can send per day, and the number of recipients per message.

If your users exceed an email sending limit, they’ll get an error message, such as:

• You have reached a limit for sending email.
• You reached a Gmail sending limit.
• You exceeded the maximum recipients.

After reaching one of these limits, users can’t send new messages for up to 24 hours. However, they can still access their Google Workspace account, get incoming email, and use their other Google services. After this suspension period, sending limits are reset and users can resume sending mail.

Limits for trial accounts #

You can try Google Workspace with a free trial account.

Free trial account limits

Google Workspace free trial accounts have different limits than paid accounts, and limits aren’t increased during the free trial period. Visit About your Google Workspace free trial to:

• Find out when your trial ends.
• Convert your trial account to a paid account.
• Cancel your trial account.

Convert to a paid account

To convert to a paid account, follow the steps in About your Google Workspace free trial.

Limits increase for paid accounts

After you convert from a free trial account to a paid subscription, your account sending limits automatically increase when both of the following are true:

• Your domain has cumulatively paid at least USD 100 (or equivalent)
• At least 60 days have passed since reaching that payment threshold

If you bought your domain from Google, the cost to increase your limits is the cost of your domain plus US 100.

Limits for Drive and Groups with free trial accounts

When using Google Drive through a Google Workspace free trial account, you can share Google Docs, Sheets, and Slides with people inside and outside your organization. If you reach the Gmail trial limit, you can continue to share with people outside your organization, but they won’t get the sharing email notifications.

When using Google Groups through a Google Workspace free trial account, you might experience the following limits:

• Your sending limits might be lower than the limits in Sending limits, below.
• You can only send group email to recipients inside your organization.
• You can’t turn on autoreplies to people outside your organization, even if they’re members of a group.
• You can’t allow messages flagged by Google’s spam filters to be posted directly to a group.

Gmail sending limits #

Sending limits can change without notice. Limits per day are applied over a rolling 24-hour period, not a set time of day.

Notes:

• Sending limits are different if your organization uses the SMTP relay service to route outgoing mail through Google. Instead, go to sending limits for the SMTP relay service.
• Quotas might be different if you’re using Google Apps Script.
• The Google Groups for Business service has its own Gmail message and posting limits.

Limit type	Limit
Maximum messages per day Daily sending limit per user account*	2,000 1,500 for mail merge (previously called multi-send) 500 for trial accounts
Messages auto-forwarded Messages automatically forwarded to another account, not included in the daily sending limit	10,000
Auto-forward mail filters Account filters that automatically forward mail	20
Recipients per message Addresses in the To, Cc, and Bcc fields of a single email*	2,000 total per message (maximum of 500 external recipients )
Recipients per message sent via SMTP (by POP or IMAP users) or the Gmail API Addresses in the To, Cc, and Bcc fields of a single email. Includes email sent using smtp-relay.gmail.com or smtp.gmail.com*	100
Total recipients per day Email addresses (recipients) count each time a message is sent; 5 emails sent to 10 addresses count as 50 total recipients.*	10,000 1,500 for mail merge (previously called multi-send)
External recipients per day Email addresses outside your primary domain, including domain aliases and alternate domains	3,000
Unique recipients per day Each email address (each unique recipient) counts only once per day: 5 emails sent to 10 different addresses count as 10 unique recipients* 5 emails sent to a single address count as 1 unique recipient*	3,000 2,000 external 500 external for trial accounts

*Applies to internal and external recipients

Messages that counts toward user limits

• Messages that counts toward user limits
• Messages sent by delegated users
• Messages sent from Gmail’s vacation responder

Gmail sending limits for mobile devices #

When you use the Gmail for mobile app in Google Sync mode, the same Sending limits apply as when you use Gmail in a web browser.

When you use the Gmail for mobile app in IMAP mode, the SMTP sending limits apply

Restore a suspended Gmail account #

Administrators can check the Users section of the Google Admin console to find details about which limits were reached. Sometimes administrators can restore access. For instructions, go to Restore a suspended Gmail account.

Accounts that are detected as sending spam might be permanently restricted from sending email. For details, go to Google’s Spam and abuse policy.

Best practices for sending mail #

To help reduce the likelihood that Gmail blocks your messages or marks your messages as spam, follow the guidelines in Prevent mail to Gmail users from being blocked or sent to spam.

Gmail receiving limits in Google Workspace #

To keep Gmail efficient and accounts safe, Google limits the number of messages you can receive. If your account receives many automated messages, it’s more likely your account will reach the message limit.

When an account reaches the limit, you can’t receive any new messages. The account might also have general problems, for example slow searching. Any new incoming messages bounce back to the sender.

If you’re locked out of your Gmail account, an administrator can:

• Identify which limits have been reached by checking your account in the Admin console
• Find out when your account will be unlocked
• Sometimes reset the Gmail suspension

These Gmail limits apply to all editions and can’t be increased. The limits may change without notice.

Description	All email addressed to the account. Might appear as threaded and non-threaded Gmail conversations.
Per minute	60
Per hour	3,600
Per day	86,400
Size limit	You can receive emails of up to 50 MB. Note: To send file attachments larger than 25 MB, use Google Drive or other file-sharing services.

How long does a suspension last?

If an account reaches a receiving limit, the restriction on getting new mail typically lasts for about 24 hours. After 24 hours, receiving limits are automatically reset and the account can get mail. When an account is reset, messages sent to the account during the restricted period can’t be recovered.

Recommendations

Use Google Groups

To avoid reaching the receiving limit, send message logs and automated emails to Google Groups. Use Groups to read large or frequently mailed announcements. Using Groups helps avoid going over the receiving limits for your Gmail account. Sending automated emails to a Groups account reduces the number of messages sent to your email account. Using Groups lets you take advantage of the receiving limits for both email and Groups.

When using Groups to reduce incoming messages to your Gmail account, keep in mind:

• Groups also limits the number of incoming messages.
• To reduce the number of Gmail messages you get from Groups, change your message and notifications settings for your Groups memberships.

Accounts best practices

• Avoid using a single account for multiple users.
• Use Google Groups for sharing mail.
• Map 10 or fewer email aliases per account.
• Use groups to create shared mailboxes or to allow many people to send and receive mail with a single address.

Avoid using catch-all accounts

Spammers often try to guess email addresses in your domain. When they guess incorrectly, the spam is delivered to the catch-all address. The high mail volume can quickly reach Gmail’s limits.

Gmail bandwidth limits #

All Google Workspace accounts have Gmail bandwidth limits that help ensure the health and safety of Google systems and accounts.

As an admin, you can check the User list in your Admin console for accounts that have been suspended because they’ve reached Gmail limits. You can also see when the accounts will be reset. In some cases, you can reset the Gmail suspension. For more information, go to Restore a suspended Gmail account.

Avoid large transfers of data #

Activities that transfer large amounts of data in a short time can cause Gmail accounts to reach the bandwidth limit. For example, syncing a Gmail account to a third-party email client can use a large amount of data.

Reaching the sync limit triggers a safeguard that temporarily stops IMAP uploads for the account. For recommendations about limits and synchronization, go to Sync limits.

Monitor bandwidth limits for all Google Workspace editions #

The following Gmail bandwidth limits apply to all Google Workspace editions and may change without notice.

Gmail bandwidth limits

Limit	Per hour	Per day
Download with web client	750 MB	1250 MB
Upload with web client (includes emails sent via Gmail SMTP)	300 MB	1500 MB

POP and IMAP bandwidth limits

Limit	Per day
Download with IMAP	2500 MB
Download with POP	1250 MB
Upload with IMAP	500 MB