Email & notification APIs
AgentiSend
Transactional email API with per-key budgets and guardrails for AI agents
A transactional email API with per-sender budgets, approval queues, and a kill switch to prevent AI agents from sending uncontrolled volumes of email.
Overview
The AgentiSend homepage
AgentiSend is a transactional email API for applications and AI agents. Every API key starts with a monthly send budget that is checked as each email goes out, preventing agents from accidentally sending thousands of messages. The service includes an approval queue where suspicious sends can be held for human review, per-minute speed limits, and a single kill switch that pauses every sender on the account instantly. When a send is refused, the response names the exact fix needed. Emails are logged with delivery status and reasons, including why messages landed in spam or bounced, with a detailed report on domain reputation and inbox placement rates.
The API is Resend-compatible with REST endpoints and an MCP server for AI agent integration. It supports batch sends up to 500 emails, scheduled sends, and signed webhooks with replay capability. Deliverability features include DNS verification with copy-paste records, bounce and complaint tracking per domain, automatic do-not-send list management, and mail transfer via dedicated US-based infrastructure. All plans include role-based access control, two-factor authentication, and an audit log.
Capabilities
- Per-key send budgets enforced as emails are sent
- Approval queue for held and agent-requested sends
- Account-wide kill switch to pause all senders instantly
- Loop detection that holds suspicious repeated sends for review
- REST API and MCP server with identical operations
- Detailed email delivery logs with status and reasons
- DNS verification with copy-paste records and validation
- Bounce and complaint tracking per domain over rolling 7 days
- Batch sends up to 500 emails with per-item error reporting
Follow AgentiSend to get an email when they post a milestone, ship a new product or add a demo video.
AgentiSend fact sheet
| Community votes | 0 |
|---|---|
| Based in | United States |
| Website | agentisend.com |
AgentiSend metrics
Vendor metrics for agentisend.com: Ahrefs Domain Rating and Majestic link data, with the delta since the last review.
- Domain Rating
- 33
- no change since last check
- Trust Flow
- 1
- no change since last check
- Citation Flow
- 30
- no change since last check
- Referring domains
- 31
- no change since last check
- External backlinks
- 114
- no change since last check
Vendor Domain Rating (Ahrefs) checked 6 Nov 2026, spec changed 3 Nov 2026. Vendor topic: Business/Opportunities (1). Vendor Majestic data checked 3 Nov 2026, spec changed 3 Nov 2026. Link metrics supplied by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
AgentiSend vendor domain
Open the vendor record
We read this from the registry's RDAP record on 6 Nov 2026, 18:24 UTC.
- Domain age
- 3 months
- Registered
- Expires
- Registrar
- NameCheap, Inc.
- DNSSEC
- Not signed
AgentiSend post-launch report
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 33 to 33 no change since launch 3 Nov 2026, then 5 Nov 2026 |
| Trust Flow (Majestic) | 1 first measured 3 Nov 2026 |
| Referring domains (Majestic) | 31 first measured 3 Nov 2026 |
Day 2 since launch. Next receipt: day 30, 3 Dec 2026. Many things move these figures, so a change is not proof of cause. Only stored readings are shown.
About to launch?
Plan your launch with our free playbook, from preparing your listing to choosing more launch directories.
- The week before
- On the day
- Week one
- Beyond launch
Buyer questions
What is AgentiSend?
AgentiSend is a transactional email API for applications and AI agents. You verify a domain, create a key with a budget, send over REST or MCP, and read a log showing what happened to every message. Every key carries a send budget, sends the loop guard flags wait for human approval, and one request can pause every sender on the account.
What stops an agent from sending 10,000 emails by mistake?
Every sender has a sending limit and speed limit. By default the limit counts per month and matches the emails your plan includes, but you can lower it or count it per hour or per day. The limit is checked as each email goes out so even a bot firing thousands of requests cannot slip past the limit. When it hits the limit, sending stops and the bot is told exactly how to ask for more.
Do you suspend accounts without warning?
No. Every automatic step is published with warnings at 2% bounces and 0.08% complaints sent by email with the numbers. The account pauses at 4% bounces and 0.08% complaints. If the rate keeps climbing, the pause can come soon after the warning. A paused account starts sending again after you appeal and a person reviews it.
Can I use AgentiSend for cold email?
No. AgentiSend is for email people are expecting from you such as receipts, alerts, resets, and invoices. Sending to strangers who never asked breaks the rules and gets accounts paused, and the service does not build features to make cold email easier.
What happens if a bot hits its limit halfway through a send?
Sending stops cleanly and nothing goes out half-finished. Each email is either accepted or refused, never something in between. The refusal tells your software how many it has sent, what the limit was, and how to carry on once the limit resets or you raise it.
Leave a review for AgentiSend
No customer reviews of AgentiSend yet. Write the first. Customer reviews are free and nobody can buy them.
AgentiSend has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
Compare with
| # | Product | DR | Votes |
|---|---|---|---|
| 1 |  Mail |
4 no change since last check | 0 votes. Log in to vote for MailBots as a buyer |
| 2 |  Canary MailAI-powered email client with unified inbox, encryption, and calendar for Mac, iPhone, Android, and Windows |
70 no change since last check | 0 votes. Log in to vote for Canary Mail as a buyer |
| 3 |  GroundmailTransactional email API and SMTP for password resets, receipts and alerts |
24 no change since last check | 0 votes. Log in to vote for Groundmail as a buyer |
| 4 |  Domain |
21 no change since last check | 0 votes. Log in to vote for DomainCanary as a buyer |