Pricing
Free to start. $49 a month when you need more.
One price per workspace. Paid plans include a pool of drafts, so there is nothing to connect before you start. Past that, bring your own model key or run one on your own machine, and we never take a margin on tokens.
MastroSDR is built for sending to US businesses. Any recipient it can place in the UK or the EU is refused at the moment you hit send. Canada goes through only when the prospect records the page on their own site where the address was published, which is what Canadian law counts as consent.
Yearly works out at more than two months free
Free
$0forever
Prove it works on a real list before you decide anything.
- 500 new companies found a month
- 25 emails written for you, no key needed
- Your own model key past that, and we never take a margin
- 1 mailbox, 500 sends a month and 25,000 prospects held
- A sending domain set up for you costs $25 a year
- 1 campaign, one email each, 1 seat, and every guardrail
Pro
$49per month
$468 a year paid yearly
A founder or a small sales team running outreach every week.
- 5,000 new companies found a month
- 2,000 emails written for you, no key needed
- Your own model key past that, and we never take a margin
- Unlimited sends, prospects and mailboxes
- A sending domain set up for you costs $25 a year
- Follow-ups up to 8 steps, 20 campaigns, 5 seats
Scale
$149per month
$1,428 a year paid yearly
Several people sending, at volumes a single mailbox will not carry.
- 15,000 new companies found a month
- 10,000 emails written for you, no key needed
- Your own model key past that, and we never take a margin
- Unlimited sends, prospects and mailboxes
- A sending domain set up for you costs $25 a year
- Follow-ups up to 12 steps, 200 campaigns, 25 seats
Every plan above starts free. You upgrade from inside the app once you have seen it work, and there is no card at signup.
Done for you
Managed
$2,000per month
You want the outcome and you do not want to learn any of this.
An SDR costs sixty to eighty thousand a year, takes a quarter to ramp, and needs managing. This is a fraction of that, starts in a week, and manages itself.
We build the whole thing
The targeting, the offer, the sequences and the follow-ups. The mailbox, the DNS records and the warmup. You do not touch any of it.
We read the numbers every week
What landed, what did not, and what changes because of it. The same diagnosis the product runs, with somebody acting on it.
You still approve what goes out
Nothing is sent in your name that you have not seen. Managed does not mean handed over.
A named person, not a shared inbox
You know who runs your account and you can reach them. We take a handful at a time because each one is a person's week.
Questions
What people ask before they pay.
Do I pay you for AI usage?
Paid plans include a pool of drafts so you can start without setting anything up: 2,000 a month on Pro, 10,000 on Scale. Past that, buy more at what they cost us, or connect your own provider key and they bill you directly at their rates. We never take a margin on tokens either way. One thing worth knowing: drafts from the included pool run on our provider account. If you would rather your prospect data only ever went through your own, connect a key and that is used instead.
What is actually included in Managed?
A person. We build the list with you on a call, then write the sequences and the offer. We set up the mailbox, its DNS records and the warmup. Every week we review what is landing and change it. You still approve what goes out. It costs a fraction of the hire it replaces, and we take a handful at a time because it involves somebody's actual attention.
What happens if I go over a limit?
The action is refused with a clear message rather than silently billed. On a paid plan there is one limit you can realistically reach, which is how many new companies get found each month. Sends, prospects, mailboxes and sending domains have no cap you will realistically reach.
Is there a cap on how many prospects I can keep?
No. Holding a prospect costs us nothing, so paid plans hold as many as you like. Free holds 25,000, which is stated rather than called unlimited because it is a number you could reach. Pasting or uploading a list you already own never spends the monthly search allowance either.
What if I cancel?
Your workspace drops to the Free plan at the end of the period. Your data stays; you can export it or keep using the free tier.
How much can one mailbox send a day?
50 a day per mailbox, which a new mailbox climbs to from 10 over 21 days. That ceiling is enforced in code rather than as a default, so no number anybody types raises it, and MastroSDR never exceeds what your provider allows either. More throughput comes from another mailbox: 100 a day is two, 400 a day is eight, on 3 domains. Paid plans have no monthly send limit on top of that.
Is the API included on every plan?
Yes. API keys, scopes and the OpenAPI spec are available on Free too, within that plan's limits.
Is the activity log a paid feature?
No. Every plan gets the full audit trail of who did what, on every tier including Free. Charging for a security record is the wrong way round.
Do you send email for me?
Only from a mailbox you connected and signed into yourself. Every first email waits in Review on a new workspace. The ways past that are explicit: the autopilot switch, recorded with who threw it, or an API key you created with sending ticked.