Source: Google
Why Does Gmail Limit Your Emails?
TLDR; because they don’t want to encourage spammy, spoofy, and scammy emails to get to their users. Google cares about user experience. And you should too.

Digging a bit deeper, take a look at these five reasons:
Fighting spam and abuse: Gmail sets email limits to stop spam tricks and bad actors, keeping the platform safe and secure.
Keeping servers running smoothly: Limits prevent servers from getting overwhelmed, making sure all users can access Gmail without any hiccups.
Protecting reputation & staying competitive: By managing email volumes, Gmail maintains its status as a trusted provider, reducing the chances of being marked as spam or getting blacklisted. Also, Gmail wants to keep its market share as there are many privacy-first ESPs with a competitive edge.
Reducing phishing risks: Email limits help lower the risk of uruguay telegram data phishing attacks and scams by limiting the number of potentially harmful emails that can be sent from one account.
Staying compliant: Gmail's limits follow anti-spam laws and data protection rules, lowering legal risks and ensuring that Gmail meets all necessary regulations.
What Happens When You Go Over the Gmail Sending Limits?
If you exceed the limit, the end of the cold emailing world is near. Okay, jokes aside, we really encourage you not to play with Gmail’s sending limits. But if your hand slips and you send too many emails over a 24-hour period, you’ll see an error message.
Below, you’ll see the types of error messages and the reasons behind them.
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If you pass the 500 messages limit, you’ll get the following message: