Controls and audit: limits on what an AI email agent can send
inboxr puts hard limits around automatic sending. Each mailbox has send-rate caps, a confidence threshold, an autopilot lock, and optional active hours. Before autopilot sends anything, the draft is checked by rules that do not rely on the AI, and every reply is recorded with who or what sent it.
Last updated October 13, 2026
What this covers
Letting software send email in your name is a real decision. This page lists every limit inboxr places around that, what each one does, and where you change it. The short version: nothing is sent automatically until you allow it, the amount it can send is capped, and each automatic reply has to pass checks that do not depend on the AI's own judgment.
Controls on whether anything sends
Co-pilot is the default
Every new mailbox starts in co-pilot mode. Drafts are written and held in the review queue. Nothing leaves your mailbox without a person approving it.
The autopilot lock
Autopilot cannot be switched on until a mailbox has 20 clean approvals, meaning drafts you sent without editing. Edited approvals move the count back. The lock is per mailbox, so each inbox earns it separately.
Back to co-pilot at any time
Switching a mailbox from autopilot to co-pilot takes effect right away. You can also turn off "Process inbound mail" on a mailbox, which stops inboxr reading it at all.
Controls on what autopilot may send
| Check | What it does | If it fails |
|---|---|---|
| Confidence threshold | The draft's 0 to 100 score must be at or above the threshold set on the mailbox. | Held for review |
| Active hours | Automatic sending only happens inside the days and hours you allow. | Held for review |
| Link, address, and phone check | Any link, email address, or phone number in the draft must come from your knowledge base, your agent's links, or your own mailbox domain. | Held for review, with the reason |
| Complete draft | The draft must not be empty, cut off, unusually long, or declined by the AI. | Held for review |
| Suspicious email | Incoming mail that looks like an attempt to instruct the AI is flagged. | Held for review |
| Automated sender | Auto-responders and machine-generated mail are never answered automatically. | Held for review |
| Thread length | After a set number of automatic replies in one conversation, a person takes over. | Held for review |
| Send cap | The mailbox must be under its automatic sending limit. | Held for review |
Every failure has the same result: the draft is not sent and waits for a person. There is no case where a failed check sends anyway.
Send-rate caps
Each mailbox has a limit on how many replies it can send per minute, per hour, and per day. The limits protect your sender reputation if something goes wrong, such as a flood of inbound mail. There are two sets:
- Automatic sends have the tighter limit, because nobody is watching each one. When autopilot reaches it, further drafts are placed in the review queue.
- Sends a person approves have a higher limit. If you reach it, the approval is blocked with a message and you can send again shortly.
Send caps are separate from your plan's monthly AI replies, which is a billing limit. When a plan's monthly replies are used up, inboxr keeps receiving mail and pauses new drafting until you upgrade or your period resets. Nothing is lost and there are no extra charges. See pricing.
A record of what was sent
Sample data. Names and messages are fictional.
The Sent tab of the review queue lists every reply that went out and whether a person or autopilot sent it. For each email inboxr keeps the original message, the AI's draft, the confidence score and its reason, the final reply, and whether it was edited. The analytics page shows the split between automatic and reviewed sends over any timeframe, along with how often drafts needed editing.
Behind the scenes, inboxr also writes an audit log of sign-ins, review decisions, sends, mailbox mode changes, and billing changes, with the time and the account that made them. That log is kept on our side and used by our team for support and investigation.
Controls on who can do what
A workspace has two roles. Admins have full access, including billing, settings, and team management. Members get only the areas an admin grants them: review queue, mailboxes, agents, knowledge base, analytics, and, on plans that include them, chat and CRM. Areas a member lacks are hidden from their navigation. New members start with no access until an admin ticks the areas they need.
Controls on what the AI reads
- Ignore rules keep chosen senders, domains, and subjects away from the AI entirely.
- Bounce filtering removes delivery-failure notices automatically.
- First connection is bounded. When you connect a mailbox, inboxr starts with recent mail only. It does not draft replies to your entire back catalogue.
Who it is for
Anyone who has to answer the question "what stops it sending something it should not?" before agreeing to try an AI email agent. For how the automatic checks fit together, see autopilot and confidence scoring. For questions to ask any vendor, the guide to AI email agents has a checklist.
Common questions
How do I stop inboxr from sending automatically?
Switch the mailbox back to co-pilot from its mode page. It takes effect right away and every new draft waits for approval. You can also turn off "Process inbound mail" to stop a mailbox being read at all.
What is a send cap?
A limit on how many replies a mailbox can send per minute, per hour, and per day. The autopilot limit is tighter than the limit for replies a person approves. When autopilot reaches its cap, further drafts go to review instead of sending.
What checks run before autopilot sends a reply?
The draft must score at or above your confidence threshold, must be complete, must be inside your active hours, and must not contain a link, email address, or phone number that is not in your knowledge base or agent links. Mail from automated senders is never auto-sent.
Can I see what autopilot sent?
Yes. The Sent tab of the review queue lists every reply with whether it was sent by a person or by autopilot, and analytics shows the split over time.
Can I limit what a teammate can do?
Yes. Members get access only to the areas an admin grants, such as the review queue or the knowledge base. Billing, settings, and team management are admin-only.