To protect email addresses from being misused by hackers to send spam, we have introduced a limit on sending emails. The default setting allows an e-mail address to send 300 e-mails per hour, 50 recipients per message and the entire domain 2000 e-mails per hour.
If an email is delivered to multiple recipients, the total number of recipients is included in the limit.
Once the limit has been exceeded, it will not be possible to send additional emails for the next 60 minutes. Messages sent during blocking are not delivered and need to be resent after 60 minutes. When sending through the SMTP server, the e-mail client will refuse to send additional e-mails after the error message. When sending via phpmail (), no error message is displayed.
If you do not need to send all e-mails at once, you can use a batch e-mail client or a specialized service. For example:
- Email Sender for Windows; https://sourceforge.net/projects/emailsender/
- E-Campaign for Windows; https://download.cnet.com/e-Campaign/3000-2367_4-10105677.html?tag=mncol;1
- GroupMail Free Edition for Windows; https://download.cnet.com/GroupMail-Free-Edition/3000-2367_4-10060146.html?tag=mncol;2
- Bulk Email for Mac; https://itunes.apple.com/us/app/bulk-email/id888831488?mt=12
- MailChimp; https://mailchimp.com
The reason we have these limits is simply to ensure that emails sent through our servers are not classified as spam.
