Send unlimited emails per day totally free is generally not possible with legitimate email services. Almost all email providers enforce daily or monthly sending limits to prevent spam, protect server reputation, and ensure good email deliverability. Free SMTP or email-marketing services usually allow a small number of emails per day or month, and unlimited sending normally requires a paid plan or a self-hosted email server.

Below is a clear explanation of what is realistically possible.
 

Can You Send Unlimited Emails Per Day for Free?

In practice, no major email service offers truly unlimited free sending. Providers set limits such as:

• Daily sending limits
• Monthly quotas
• Rate limits (emails per hour)

These restrictions exist because email platforms must prevent spam abuse and maintain good sender reputation. Without limits, their servers could be quickly blocked by spam filters.

 

Examples of Free Email Sending Limits

Here are common limits from well-known services:

Brevo (formerly Sendinblue)

• About 300 emails per day on the free plan.

Mailgun

• Around 100 emails per day on the free tier.

SendPulse

• Approximately 400 emails per day on the free plan.

MailerSend

• Roughly 100 emails per day and 500 per month on the free plan.

Gmail SMTP

• Typically about 100–150 emails per day for free accounts.

These limits vary depending on account verification and provider policies.

Why Email Services Limit Free Sending

Email providers impose limits for several reasons:

1. Spam Prevention

Unlimited sending would allow spammers to send millions of emails quickly.

2. Server Protection

High volumes could overload servers and affect other users.

3. Deliverability Protection

If too many spam emails are sent from a service, receiving providers may blacklist the server IP.

Because of these factors, providers carefully control how many emails free accounts can send.

Ways People Send Large Numbers of Emails

If you need to send a high volume of emails, there are a few common methods.

1. Paid SMTP Services

Most businesses use paid SMTP platforms that allow higher limits or unlimited sending.

Popular options include:

• Amazon SES
• Oudel
• Mailgun
• Brevo
• Elastic Email

For example, Amazon SES charges very low rates per thousand emails and can scale to millions.

Read More: Send Unlimited Emails Per Day Totally Free