Shared & reseller hosting accounts are limited to 100 emails per hour, per domain. This limit is in place to protect our servers from SPAM, whether it’s another customer attempting to SPAM or mass-mail or a website that has a large amount of blog spam.
These limits can be adjusted on a per-account basis in the event we find there are not a large amount of bouncebacks. If you’re planning to send a large amount of emails, we always recommend using a 3rd party SMTP service to ensure your emails are not throttled.

If you have any web hosting questions please feel free to reach out to us. We're happy to help.