How many emails per hour?

Sending too many emails per hour can get your messages flagged as spam. Here’s a guide to sending email responsibly while still reaching your targets.

How many emails per hour?

Email is an essential communication tool for personal and business use. However, sending emails irreponsibly can cause deliverability issues. Understanding optimal email sending limits helps ensure your messages reliably reach recipients.

This article outlines email best practices regarding sending cadence and volume. Follow these guidelines to keep your sender reputation strong, avoid landing in spam folders, and maximize email campaign performance.

Why email sending limits matter

Bulk email sending raises spam flags with Internet Service Providers (ISPs). Sending too many messages too fast suggests spam behavior rather than legitimate communication.

ISPs and email providers limit sends per hour to protect inboxes. Exceeding these limits causes deliverability issues:

  • Emails automatically filtered as spam
  • IP address blocked or blacklisted
  • Account suspended or terminated

Additionally, overly frequent email blasts frustrate recipients. Saturated inboxes lead subscribers to unsubscribe, report as spam, or ignore future emails.

Recommended sending frequency

So what’s the optimal number of emails to send per hour? Industry experts suggest:**

  • Individual accounts: Less than 100 emails per hour
  • Business accounts: Less than 2,000 emails per hour

These limits allow for effective communication without raising spam suspicions.

Tailor your approach based on factors like:

  • Account type: Individual or business
  • Email type: Transactional, promotional, etc.
  • List size: Small segment vs entire database
  • Engagement: Open/click rates

Track email metrics to refine your strategy over time.

Techniques for responsible sending

Abiding by email best practices protects your deliverability. Here are techniques to send efficiently:

1. Set sending limits

Configure send limits in your email service provider based on:

  • Account type
  • List size
  • Industry benchmarks

Test different caps to find the right volume for positive user experience.

2. Schedule campaigns

Strategically queue your messages to avoid hitting hourly limits.

Time email blasts during days/hours with high open rates. Use scheduling tools to easily set optimal send times.

3. Throttle sending speed

Slow the rate of blast sends for more gradual delivery. Send at half capacity to stay within constraints.

Many providers let you adjust sending velocity to fit needs.

4. Split campaigns

Divide large email campaigns into smaller segments. Send each segment in phases over multiple days or weeks.

Personalized, bite-sized blasts drive better results than saturating people all at once.

5. Monitor metrics

Pay close attention to the metrics for each campaign:

  • Send/delivery rates
  • Bounces
  • Opens/clicks
  • Unsubscribes
  • Spam reports

Refine your approach to balance effectiveness with responsible sending.

Key takeaways

  • Email providers enforce hourly send limits to prevent spam
  • Stay under 100 emails per hour for individual accounts
  • For business accounts, limit sends to 2,000 emails per hour
  • Schedule sends, throttle speed, and segment campaigns to respect limits
  • Monitor email metrics and user engagement to refine strategy

Sending emails excessively degrades deliverability, frustrates recipients, and damages sender reputation. Following responsible practices allows reaching more people without issues.


Tempting as it is to blast emails rapidly, restraint is vital for success. Abusing send limits hinders meaningful communication with real people. Invest time designing email campaigns for quality over quantity while respecting constraints. Your future self will thank you when your hard work pays off with engaged recipients and no blocked messages.

Now that you know the recommended hourly email limits, go ahead and reach people withoutspamming them. What email best practice resonated most with you? Share your thoughts below!

FAQ Related To How Many Emails Per Hour

  1. What happens if you send too many emails per hour?
    Sending too many emails per hour can cause deliverability issues like getting flagged as spam, blocked or blacklisted IP addresses, suspended accounts, lower open/click rates, increased unsubscribes and complaints. Stay below 100 emails per hour for individual accounts and 2,000 for businesses.
  2. Can you get banned for sending too many emails?
    Yes, both the email service provider and receiving ISP can penalize accounts for excessively high send volumes by blacklisting, suspending or terminating accounts with spam-like behavior. Stick within appropriate limits and monitor blacklists to avoid problems.
  3. What is the maximum number of emails Gmail allows per day?
    For individual Gmail accounts, Google recommends not exceeding 2000 emails per day to maintain good sending reputation. Higher volume looks like spamming behavior, leading messages to land in spam.
  4. Can I get in trouble for sending too many emails?
    Yes. Both your ESP and recipients can punish excess sends. You risk blocked messages, banned accounts, spam folder filtering of emails, lower engagement/revenue from campaign fatigue. Carefully follow sending best practices.
  5. What happens if an email is flagged as spam?
    If enough recipients mark your messages as spam, email providers will detect spam behavior and apply penalties like filtering emails to spam folders, throttling sending abilities, suspending accounts entirely, and damaging sender reputation.
  6. How often should marketing emails be sent?
    For the average business, marketing emails should be sent 2-5 times per week maximum. Segment subscribers based on engagement level and tailor frequency – less engaged once weekly, highly engaged up to 2-3x per week. Monitor complaints and engagement metrics.
  7. What is a safe number of emails per month?
    For an average individual account, ~3,000 emails per month is reasonably safe if using Gmail or another major provider. Higher volumes risk spam flags. For businesses, ~50,000 monthly often balances healthy engagement with good deliverability.
  8. How many emails can I send from Gmail account daily?
    Google recommends capping Gmail sends at 2000 emails maximum per day. Though Gmail technically allows sending 3000+ daily, best practice is keeping personal sends under 500/day to ensure reliable inbox delivery. Too much looks like spam behavior.
  9. How many emails can I send per day legally?
    Legally in the US under CAN-SPAM you must include opt-out options, sender addresses on marketing emails and not disguise subject lines. There are no email number limits, but excessive volume violates ISP terms and risks penalties for spam-like sending.
  10. What happens if you send over 300 emails a day in Gmail?
    Gmail alerts users approaching send limits. Over 300 emails per day risks throttled sending speed or spam filtering, although daily limits depend on account history & patterns. Consistently high sends hamper deliverability. Stick under 500 emails daily.
  11. What is the limit for sending emails in Gmail?
    Gmail personal accounts should limit sends to 100/hour, 500/day for best deliverability. Gmail caps emails at 2,000 per day to discourage spamming – exceeding that threshold risks send restrictions or spam box filtering even if legal.
  12. Can I get blacklisted for sending too much email?
    Yes, both your domain/IP and individual accounts can end up on an ISP or ESP’s blacklist for excessively high volumes that resemble spamming. This leads all your emails automatically being filtered as spam. Carefully follow recommended limits.
  13. Why am I limited to 500 emails a day?
    Providers cap sending limits to combat spammers and prevent abuse. Gmail’s 500 emails a day threshold protects user experience. Pay attention to this limit, spread campaigns over days/weeks, monitor engagement metrics, and consider a dedicated ESP for higher volumes.
  14. Is it legal to send 1000 emails a day?
    Yes, sending high volume emails is legal under CAN-SPAM if abiding by regulations. But just because it is legal does not mean it is advisable – sending 1000+ emails daily often harms deliverability due to spam risk. Carefully segment, spread out scheduling, and throttle speed for large campaigns.
  15. How many emails can I send from my personal Gmail account?
    For best results, limit personal Gmail accounts to 100 emails per hour and a maximum of 500 per day. Technically you can send more but delivery likelihood reduces significantly. High volume triggers spam filters since consumer inboxes don’t need mass blasts.
  16. What is the maximum number of emails Outlook allows per day?
    To maintain good sending reputation, Microsoft recommends Outlook users stay under 200 emails sent per day, with bursts up to 500 occasionally acceptable. Limit personal accounts to 100 per hour to avoid potential throttling.
  17. How many emails can I send on Hotmail per day?
    Hotmail recommends capping sends at 400–500 emails daily from personal accounts. Business marketing limits are higher but staying under 2000/day helps avoid spam filters and blocks. It’s smart to segment larger email lists into smaller pieces.
  18. What happens when you send over 500 emails a day Gmail?
    Gmail may throttle send speed for accounts sending over 500 emails per 24 hours as this activity resembles spammers. Sustained high volume risks automatic spam filtering or banned accounts. Spread out scheduling, keep under 500 daily, and monitor bounce/spam complaint rates.
  19. Can you get in trouble for sending too many emails from Gmail?
    Yes, Gmail cracks down on accounts sending excessive email volume through limits and spam filtering. Under 500 emails daily keeps personal accounts safe. Business marketers should use dedicated email services permitting higher volumes after careful audience segmentation.
  20. How many emails can Sendinblue send per day?
    Sendinblue caps transactional email accounts at 300 emails per day for basic plans. Higher tiers allow up to 9,000 emails daily. Marketing blasts are rate limited based on factors like sender reputation and user engagement. Sending above daily limits risks deliverability issues.
  21. What is the limit for emails sent per day in Gmail?
    The general limit for emails sent per day in Gmail consumer accounts is 500 per day to balance deliverability with spam risk. Google technically allows up to 2000 per day before throttling, but lower volumes ensure emails reliably reach inboxes rather than spam folders.
  22. Can I get banned for mass emailing?
    Yes, you can get banned by email providers and Internet Service Providers for excessively high email volume that qualifies as spamming or abusive behavior. Carefully follow recommended limits for mass emails and avoid repeatedly sending to unengaged people or those who unsubscribe.
  23. Is it legal to send 2000 emails a day?
    Under CAN-SPAM regulations, sending 2000 daily emails is legal if providing opt-out options and proper sender identity. However, such sustained high volume will likely damage deliverability and sender reputation due to resembling spam behavior. Closely monitor blacklists in this scenario.
  24. What is Sendinblue daily sending limit?
    Sendinblue’s free plan caps transactional emails at 300 per day. Higher tiers allow up to 9000 per day for transactional email and unlimited marketing emails. But best practice is keeping marketing blasts around 5000 per day, and monitoring user engagement to maximize deliverability.
  25. How many emails can I send safely without getting flagged as spam?
    To avoid getting flagged as spam, personal accounts should send less than 100 emails per hour and 500 per day. Business accounts can handle more but avoid consistently exceeding 2000 per hour/10000 per day without careful list segmentation and engagement tracking to stay under ISP spam thresholds.
  26. How many emails should I send a day?
    Send volume depends on your account type and objectives:
  • Individual accounts: Max 100 emails per hour, 500 per day.
  • Business accounts: Max 2,000 emails per hour, 10,000 per day.

Base daily limits on list size, engagement metrics, and field/industry benchmarks to find the right balance.

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