Outgoing email limit
Email transfer with different domains
Parameter | Plan Type | Rate limit |
Domain | Paid | NA |
Domain | Free | 1000 emails/hour, 2000 emails/day |
Mailbox | Paid/Free |
200 emails/hour, 500 emails/day |
Email transfer within the same domain
Parameter | Plan Type | Rate limit |
Domain | Paid | NA |
Domain | Free | NA |
Mailbox | Paid/Free | 1000 emails/hour, 2000 emails/day |
If an outgoing email surpasses the above-listed limit, the emails will fail and may bounce back with an undeliverable message with the following error codes:
Hourly quota
- 550 5.4.6 Sender Domain Hourly Quota Exceeded - [domain=$domain] will not be allowed to send emails till [time=$time]: Domain's hourly quota of sending emails has been exceeded, outgoing email services would resume after the mentioned time(in GMT) in the bounce-back message
- 550 5.4.6 Sender Hourly Quota Exceeded - [account=$account] will not be allowed to send emails till [time=$time]: Email account's hourly quota of sending emails has been exceeded, outgoing email services would resume after the mentioned time(in GMT) in the bounce-back message
Daily quota
- 550 5.4.6 Sender Domain Daily Quota Exceeded - [domain=$domain] will not be allowed to send emails till [time=$time]: Domain's daily quota of sending emails has been exceeded, outgoing email services would resume after the mentioned time(in GMT) in the bounce-back message
- 550 5.4.6 Sender Daily Quota Exceeded - [account=$account] will not be allowed to send emails till [time=$time] as daily email sending limit has been exceeded: Email account's hourly quota of sending emails has been exceeded, outgoing email services would resume after the mentioned time(in GMT) in the bounce-back message
If an outgoing email surpasses the above-listed limit, the emails will fail and may bounce back with an undeliverable message with the following error codes:
550 5.4.6 Sender Quota Exceeded
550 5.4.6 Sender Domain Quota Exceeded
You should be able to send mails again within 1 to 24 hours. If the problem does not go away, please contact our support team.
Incoming email limit:
Email transfer with different domains
Parameter | Plan Type | Rate limit |
Domain | Paid | NA |
Domain | Free | 1000 emails/hour, 2000 emails/day |
Mailbox | Paid/Free | 500 emails/hour |
Email transfer within the same domain
Parameter | Plan Type | Rate limit |
Domain | Paid | NA |
Domain | Free | NA |
Mailbox | Paid/Free | 1000 emails/hour |
Violating the above limits will render your account temporarily unreachable to senders.
Incoming email limit for a non-existing mailbox:
There is a soft limit for the maximum number of emails sent to a non-existing mailbox, a domain can accept.
Rate limit: 500 emails/hour and 1000 emails/day
Once the rate is exceeded, the domain won't be able to accept any mail to a non-existing email address, however, the incoming email to the actual email won't get impacted until the domain/email rate limit defined earlier.
For a mass emailing solution, we recommend using Constant Contact and Sendgrid for your emails.