PricingIn US dollars
One plan. Pay for what you send.
$5 a month for 5,000 credits, 3 agent mailboxes and unlimited domains. 1 credit sends 1 email, however it's sent. Need more? Buy a pack, or let top-up handle it.
Try it for 7 days $1 for the trial, card required.
The plan
| Plan | Monthly | Yearly | Credits a month | Agent mailboxes | Domains |
|---|---|---|---|---|---|
| MySendbox | $5 | $50 | 5,000 | 3 included | Unlimited |
Every email uses 1 credit, however it's sent: through Dispatch, as a reply from our agent, or as a reply from your own agent over MCP. The plan's credits arrive on the 1st of each month and expire at the month's end. Paying yearly gets you two months free.
Try it for 7 days for $1. The trial includes 500 credits. A card is required and the $1 isn't refunded; after 7 days the plan starts unless you cancel.
New accounts start at 50 emails a day while they build a sending record. The limit grows with good delivery; it's what keeps everyone's mail out of spam folders.
Credits
When the month's credits aren't enough, buy a pack. Packs last 12 months and are used after the plan's credits.
| Pack | Price | Per 1,000 emails |
|---|---|---|
| 20,000 credits | $10 | $0.50 |
| 100,000 credits | $40 | $0.40 |
| 500,000 credits | $150 | $0.30 |
Our built-in agent's writing uses credits too, on top of the email's 1, by the model you choose for the mailbox. Your own agent over MCP only uses the email's credit.
| Reply model | Credits a reply |
|---|---|
| Claude Haiku 5.5 (default) | 1 + 10 |
| Claude Sonnet 5.5 | 1 + 40 |
| Claude Opus 5.5 | 1 + 150 |
Turn on automatic top-up and a pack is bought with your saved card when credits fall below 1,000, 5,000 or 20,000, your choice. If credits do run out, mail still arrives and is screened; emails wait and replies are held until you top up.
More agent mailboxes
The plan includes 3. Beyond that, each mailbox is priced by how many you have, and the rate drops as you grow:
| Mailboxes | Each, monthly | Each, yearly |
|---|---|---|
| 1-3 | Included | Included |
| 4-50 | $1 | $10 |
| 51-100 | $0.75 | $7.50 |
| 101-150 | $0.50 | $5 |
| 151 and up | $0.25 | $2.50 |
Each tier applies only to the mailboxes in it: 60 mailboxes are 47 at $1 and 10 at $0.75, $54.50 a month.
- An address on your own domain, such as support@ or bookings@.
- Every incoming email screened for phishing and instructions aimed at AI.
- A Held queue for anything risky, with approve, edit and reject.
- Your tools over MCP, webhooks and the REST API.
- Your own agents connected over MCP, with the same checks on every reply.
Good to know
- Team members are free.
- Adding or removing mailboxes, and switching between monthly and yearly, is prorated. Cancel any time; you keep the plan until the end of the period you've paid for.
- Billing is by card through Stripe, with invoices in the dashboard.
- Above a million emails a month, talk to us.
- MySendbox is for mail people expect: replies and transactional email. Newsletters and bulk mail aren't allowed; see the acceptable use policy.