Business email use policy

Storage and mailbox allowance

Business email costs $2 per mailbox per month, in addition to active Contreol website hosting. Each mailbox includes 1 GB (1,024 MB) of storage. You can order up to 10 mailboxes through self-service. Contact support for larger requirements. Mailbox orders require paid hosting and a verified domain; payment activates email service.

When a mailbox is full, it cannot accept additional mail until space is available. Keep space available by archiving or removing messages you no longer need. Sending limits do not delete stored messages.

Outgoing email limits

• Each mailbox: sending-rate thresholds of 100 recipient deliveries per hour, 500 per day and 2,000 per week.
• All mailboxes on one customer domain combined: 300 recipient deliveries per hour, 1,500 per day and 5,000 per week.
• Each outgoing message: up to 50 recipients and 25 MB total size, including encoded attachments. The usable attachment size is smaller.

Each To, Cc and Bcc recipient counts toward sending volume. Mailbox and shared domain limits both apply. Limits use continuously recovering sending rates, rather than resetting at midnight or at the start of a calendar week. Sending too quickly can temporarily prevent further sending. Your mail client receives an error and may retry later; check its Outbox or error notice. Messages exceeding the per-message recipient or size limit must be reduced before retrying.

Permitted use

Use these mailboxes for normal customer enquiries, supplier communication, appointments and other ordinary business correspondence. This service is not a bulk-email platform. Spam, purchased or harvested recipient lists, unsolicited bulk or automated cold-email campaigns, phishing, malware, deceptive sender identities and attempts to evade limits are prohibited. Dividing a campaign among multiple mailboxes does not make it acceptable.

Use an appropriate mailing platform for newsletters, marketing campaigns and high-volume automated delivery. Contact us before planning unusually large sending volumes. Additional mailboxes do not remove shared domain limits.

Security and abuse response

Protect mailbox passwords and devices. If you suspect compromise, change the password and contact support promptly. We may temporarily restrict outgoing mail or suspend compromised or abusive services to protect other customers and delivery reputation. Rate limits reduce abuse risk but cannot guarantee inbox placement or prevent every incident.

This policy supplements the Terms of service. New and resumed mailbox orders require acceptance of the current mailbox terms. Existing agreement records are preserved.

Need help?

Contact brianbateman@doyjo.com with your domain and the error message. Do not send passwords. We can review legitimate requirements and help you select a suitable service.