CONTREOL BY DOYJO LLC
Business email use policy
Ordinary business correspondence, with limits that protect shared mail delivery.
Published October 3, 2026 · Policy version 2026-10-03.3 · Mailbox order terms mailbox-recurring-2026-10-02.1
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. The Terms’ eligibility, sensitive-data, enforcement, liability and third-party-claim provisions also apply to email service. Mandatory rights remain protected.
Cancel email renewals in Manage services, or contact support if you cannot sign in. Your request is sufficient; no email confirmation is required. Paid access continues through its paid period while we stop or reduce the appropriate recurring payments. Stored messages are subject to the Privacy Policy; cancellation does not delete them. Previous Email Policy (September 24).
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.
Abuse and account enforcement
Ordinary business email currently has a limit of 100 outgoing remote messages per domain per hour across its mailboxes. Delivery also depends on security checks, recipient systems and applicable technical limits. Use a separately approved sending platform for permission-based campaigns; bulk mailing is not included.
The Acceptable Use Policy covers email and its effect on shared infrastructure. Report suspected spam, phishing or compromised mailboxes to brianbateman@doyjo.com. We can suspend outgoing mail and mailbox access while investigating and terminate services for serious or repeated abuse. Restriction does not automatically delete stored messages; support remains available for review, billing cancellation and lawful data requests.