Gmail sending limit calculator: how long will your list take?
Personal Gmail
- At Google’s limit, 500 a day
- 2 days
- At Fusomail’s cap, 400 a day
- 3 days
A gap of 20 seconds is about 2 h 47 min of sending on a full day.
Google Workspace
- At Google’s limit, 2,000 a day
- 1 day
- At Fusomail’s cap, 1,500 a day
- 1 day
A gap of 20 seconds is about 6 h 57 min of sending.
On Fusomail, 1,000 emails fit in the Starter plan’s 5,000 a month. See pricing.
The numbers behind it
| Account | Google’s limit | Fusomail’s cap |
|---|---|---|
| Personal Gmail (@gmail.com) | 500 a day | 400 a day |
| Google Workspace | 2,000 a day | 1,500 a day |
Google’s figures are from its help pages for personal Gmail and Google Workspace, read on 4 November 2026. Google says limits can change without notice, and a Workspace account on a trial has a lower limit of 500 a day. The whole picture is in the guide to Gmail sending limits.
Why stay under Google’s limit?
Because going over it stops you sending anything at all. Google says a personal account can be blocked for 1 to 24 hours, and a Workspace account for up to 24 hours. Your ordinary email to clients stops too, not just the campaign.
Your own sending counts as well. If a campaign uses every last email of the day, one reply can tip you over. That is why Fusomail stops at 400 and 1,500, leaving room for the mail you write yourself.
A “day” is a rolling 24 hours
The limit doesn’t reset at midnight. Google says limits “are applied over a rolling 24-hour period, not a set time of day”. Each email counts for the 24 hours after it was sent, so an account that sends 400 emails on Monday morning can send again from Tuesday morning, as those drop out. That is what this calculator counts as a day.
Worked examples
| List size | At 500 a day | At 400 a day | At 2,000 a day | At 1,500 a day |
|---|---|---|---|---|
| 1,000 people | 2 days | 3 days | 1 day | 1 day |
| 5,000 people | 10 days | 13 days | 3 days | 4 days |
| 20,000 people | 40 days | 50 days | 10 days | 14 days |
Pace matters too
Sending hundreds of emails within a minute looks like a machine. Fusomail leaves a gap between emails from one account: 20 seconds by default, stretched at random so the rhythm isn’t regular. You can choose anything from 5 seconds to 60 minutes. At a long gap, the pace rather than the limit may decide how many fit in a day; the calculator shows that when you change the gap.
Your plan’s monthly emails are separate
Google limits your account per day. A tool’s plan may also limit you per month. In Fusomail: Free 200, Starter 5,000, Premium 30,000 (coming soon), Pro 60,000 (coming soon) emails a month. If a list is bigger than what is left this month, the campaign pauses and carries on when the month turns, or sooner if you move up a plan.
Planning a long list
Send the people who matter most first, start early in the week, and keep your account’s ordinary mail in mind. If a campaign has a deadline, work back from it with the number of days above, and leave a day spare.
Questions people ask
How long does it take to send 1,000 emails from Gmail?
On personal Gmail, 2 days at Google’s limit of 500 a day, or 3 days at Fusomail’s safer 400. On Google Workspace, 1 day at Google’s limit and 1 day at Fusomail’s 1,500.
Can a personal Gmail account send 2,000 emails a day?
No. Google’s help page says you may hit the limit with more than 500 emails sent in a day. 2,000 a day is the Google Workspace limit, and Workspace accounts on a trial are lower.
What happens if I go over Gmail’s sending limit?
You see a message such as “You have reached a limit for sending mail”, and you can’t send new email for a while: Google says 1 to 24 hours on personal Gmail and up to 24 hours on Workspace. You can still receive email.
Does Gmail’s daily limit reset at midnight?
No. Google applies it over a rolling 24 hours, so each email stops counting 24 hours after it was sent.