> ## Documentation Index > Fetch the complete documentation index at: https://docs.bizzyco.ai/llms.txt > Use this file to discover all available pages before exploring further. # Sending email > Which addresses can send, how each message is labelled, and when a send is refused Bizzy sends email for you when you email an invoice, when an agent sends a template, and when an automation sends one with nobody present. The same rules apply to all three, including every retry of a delayed message. ## Addresses that can send Send from a [Bizzy-hosted address](/user-guide/email-addresses/bizzy-hosted) on a domain whose email setup has finished. A connected Gmail or Outlook mailbox delivers mail to your inbox but cannot send; choose a Bizzy-hosted address instead. A send from an address that has since been disabled, or whose domain has lost its email setup, is refused — including one an automation queued earlier. An invoice shows the reason on its **Delivery** card; an agent reports it in chat. ## Transactional and marketing Every message is labelled **transactional** or **marketing**, and the label decides which recipient rules apply. | Label | Use it for | | - | - | | **Transactional** | Mail that completes or services something the recipient is already part of — an invoice, a reply, an order update | | **Marketing** | Mail that promotes a product, service or offer, including newsletters | Invoices are always transactional. An agent or automation states the label when it sends a template; it must not label marketing content as transactional. See the [Acceptable Use Policy](https://www.bizzyco.ai/acceptable-use) for what each kind of mail requires. ## Marketing email Marketing email goes only to people who agreed to receive it. Before you send, [record each person's opt-in](/user-guide/contacts/managing#marketing-opt-ins): how and when they agreed, and where you keep the proof. Record only real, explicit agreement — never bought, scraped or cold-outreach addresses, whatever the recipient's country or whether they are a business. An agent reports anyone without an opt-in as skipped and mails the rest. Withdrawing an opt-in stops marketing to that person, including messages already on their way. Add your business's [mailing address](/user-guide/businesses/profile#mailing-address) before you send marketing email; until you do, marketing sends are refused. Every marketing message goes to one recipient. When an agent sends a marketing template to several people, each gets their own message, and cc and bcc are refused. One send reaches at most 50 people, so a longer list goes out as several sends. Each message ends with your business name, your mailing address and an **Unsubscribe** link; email apps that show their own unsubscribe button use the same link. A recipient who unsubscribes gets no more marketing email from any of your addresses, and an agent reports them as skipped. Recording a new opt-in does not undo an unsubscribe. Transactional email, invoices included, still reaches them. ## Agents and automations An agent sends email when its **emailTemplates › send** action is set to **Allow**, or when you approve the request in chat. An automation sends only with **Allow**. Its final allowed run can still deliver email after the automation reaches **Completed**. Turning it off, pausing it, deleting it, letting it expire, or changing that permission stops email that has not yet been sent. See [Resource permissions](/user-guide/agents/tool-permissions). ## Addresses that stop receiving mail Some replies from the receiving side close an address for good: * The recipient reports a message as spam. * Their mail server rejects a message permanently, because the address does not exist. * The delivery service refuses to attempt a message, because an earlier bounce or spam report already blocked the address. From then on nothing is sent to that address from any of your addresses — invoices and replies included. The block holds for a retry and for a send scheduled before it happened. An invoice shows **Refused** on its **Delivery** card; an agent reports the refusal in chat. Only a message sent to that address alone counts. A report about a message with several recipients cannot say which of them it concerns, so it blocks nobody — the message still shows as bounced or reported. A temporary rejection — a full mailbox, a server asking you to try later — does not block the address. ## When sending is paused If your mail draws too many spam reports or bounces, Bizzy can pause all email from your business while it reviews your sending, as the [Acceptable Use Policy](https://www.bizzyco.ai/acceptable-use) allows. Until the pause is lifted every send is refused, invoices included, with a message asking you to contact Bizzy support. Messages refused during the pause are not sent later. ## Next steps Send a template from an agent or automation Create an address that can send This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.