Is the free plan really free, or is it a trial?

It is free and it does not expire. You get 3,000 emails in total rather than 3,000 a month, so a side project can sit on it indefinitely and a real product will use it up in the first month. Every guardrail and all ten MCP tools are included — nothing is held back for paid plans.

Why is the free plan a total rather than a monthly allowance?

Because the alternative is paying to run other people’s production traffic for free, and because a shared sending reputation is the one asset an email provider cannot buy back once it is spent. A lifetime allowance is enough to evaluate everything honestly and small enough that abuse is not worth the effort.

What happens when I hit my limit?

On a paid plan, sending continues and the overage rate applies — $0.60, $0.50 or $0.40 per thousand depending on the plan. On the free plan there is no overage: sending stops, nothing is charged, and your logs and domains stay where they are.

Do the agent guardrails cost extra?

No, and they never will. Scoped keys, per-key rate limits, recipient allowlists, approval mode, dry run and the full MCP server are on every plan including the free one. Selling the ceiling only to people who can already afford it would mean nobody ever finds out why it matters.

Yes. Starter and Pro are 15% cheaper paid yearly, and Scale is 20% cheaper. Resend, Postmark and Mailgun do not offer annual billing at all.

Will you help me move from another provider?

Yes, at no cost on any paid plan. We move templates, sending domains, suppression lists and webhook endpoints, and verify them against your live traffic before you cut over. It is limited to the first 50 customers because we are a small team and would rather cap it than quietly stop replying.

Pricing

Every guardrail on every plan. Including the free one.

Every guardrail and all ten MCP tools on every plan, including the free one. Transactional email from $12 a month, with per-key allowlists, approval mode and dry run.

Save 15–20% yearly

Free$0

The full agent stack, free

Every guardrail and all ten MCP tools. No card.

3,000 emails

One time, not monthly — and it never expires

No overage — sending stops

All ten MCP tools
Every guardrail — scopes, allowlists, approval mode, dry run
100 emails a day
1 sending domain
30-day log retention
REST API, SMTP relay and both SDKs
Every free deliverability tool

Start free

Starter$12/ month

For the first real thing you ship

Three times the free volume of the nearest alternative.

10,000 emails / month

$0.60 per 1,000 after that

Everything in Free
No daily limit
5 sending domains
3 webhook endpoints
25 templates
2 seats
Free migration from your current provider

Start free

ProMost picked$19/ month

For a product with paying customers

The tier most teams land on and stay on.

50,000 emails / month

$0.50 per 1,000 after that

Everything in Starter
25 sending domains
10 webhook endpoints
100 templates
5 seats
Webhook replay and per-attempt delivery logs

Start free

Scale$79/ month

When email is load-bearing

Unlimited domains and three months of logs.

250,000 emails / month

$0.40 per 1,000 after that

Everything in Pro
Unlimited sending domains
90-day log retention
25 webhook endpoints
Unlimited templates
25 seats
Priority sending queue

Start free

EnterpriseCustom

Anything the plans above do not fit

Talk to us. We will tell you honestly if you should.

Custom volume

Negotiated

Everything in Scale
Custom volume and retention
Dedicated support contact
Invoicing and purchase orders

Talk to us

Start on the free plan without a card. Yearly billing saves 15% on Starter and Pro, 20% on Scale. Overage is $0.60, $0.50 or $0.40 per thousand by plan, charged only on what you send above it. No per-seat pricing, ever — that is a model for sales tools, not developer infrastructure.

Free migration

Moving from Resend, Postmark or SendGrid? We will do it for you.

Templates, sending domains, suppression lists and webhook endpoints, moved across and verified against your live traffic before you cut over. Included on every paid plan, at no cost.

Limited to the first 50 customers, because we are a small team and we would rather say so than quietly stop replying.

Start a migration

Compare plans and features

Rows marked Soon are planned and not built yet. Everything else is live today and can be checked against the API.

Agent guardrails

Identical on every plan, including the free one.

Feature	Free	Starter	Pro	Scale	Enterprise
MCP tools includedMailgun's MCP server exposes 50+ operations and Postmark's exposes 4. One has no ceiling; the other has no product.	10	10	10	10	10
Tools deliberately absent — no key minting, no un-suppress, no domain delete	Included	Included	Included	Included	Included
Scoped API keys — send, read, domains	Included	Included	Included	Included	Included
Per-key rate limit	Included	Included	Included	Included	Included
Per-key recipient allowlist	Included	Included	Included	Included	Included
Approval mode — every send held for a human	Included	Included	Included	Included	Included
Dry run — render and validate without sending	Included	Included	Included	Included	Included
Sandbox domain, no DNS required	Included	Included	Included	Included	Included

Sending

Feature	Free	Starter	Pro	Scale	Enterprise
Emails	3,000 total	10,000 / mo	50,000 / mo	250,000 / mo	Custom
Overage per 1,000	Not included	$0.60	$0.50	$0.40	Negotiated
Daily limit	100	None	None	None	None
Sending domains	1	5	25	Unlimited	Unlimited
REST API	Included	Included	Included	Included	Included
SMTP relay	Included	Included	Included	Included	Included
TypeScript and Python SDKs	Included	Included	Included	Included	Included
Batch sending, 100 per call	Included	Included	Included	Included	Included
Schedule and cancel	Included	Included	Included	Included	Included
Attachments and custom headers	Included	Included	Included	Included	Included
Idempotency keys, generated by default	Included	Included	Included	Included	Included
CC, BCC and Reply-To	Included	Included	Included	Included	Included
Inbound routing	Not included	Not included	Soon	Soon	Soon

Templates

Feature	Free	Starter	Pro	Scale	Enterprise
Templates	5	25	100	Unlimited	Unlimited
Versioned, with a render API	Included	Included	Included	Included	Included
Typed template variables	Included	Included	Included	Included	Included
Visual drag-and-drop builderNot planned. It is a different product and we would build a worse one.	Not included	Not included	Not included	Not included	Not included

Deliverability

Feature	Free	Starter	Pro	Scale	Enterprise
SPF, DKIM and DMARC verified before the first send	Included	Included	Included	Included	Included
Per-record DNS diagnosis, with the fix	Included	Included	Included	Included	Included
Automatic suppression on hard bounce and complaint	Included	Included	Included	Included	Included
RFC 8058 one-click unsubscribe, injected automatically	Included	Included	Included	Included	Included
Reputation monitoring with automatic throttleThrottled before the complaint rate reaches 0.10%, which is the threshold mailbox providers act on.	Included	Included	Included	Included	Included
Free deliverability tools — SPF, DKIM, DMARC, MX, blocklist	Included	Included	Included	Included	Included
Bounce classification — hard, soft, block, spam	Included	Included	Included	Included	Included
Dedicated IP	Not included	Not included	Not included	Soon	Soon

Logs and analytics

Feature	Free	Starter	Pro	Scale	Enterprise
Log retention	30 days	30 days	30 days	90 days	Custom
Stats API — sends, deliveries, bounce and complaint rates	Included	Included	Included	Included	Included
CSV export, streamed	Included	Included	Included	Included	Included
Webhook endpoints	1	3	10	25	Unlimited
API requests a day	1,000	25,000	100,000	500,000	Custom
Signed webhooks, https only, auto-disabling	Included	Included	Included	Included	Included
Per-attempt delivery log	Included	Included	Included	Included	Included
Webhook replay by window	Included	Included	Included	Included	Included
Message tags, filtering and per-tag stats	Included	Included	Included	Included	Included
Open and link trackingOff by default on every account. Opens are measured with a tracking pixel, and that is a decision each account should make rather than inherit.	Included	Included	Included	Included	Included

Team and security

Feature	Free	Starter	Pro	Scale	Enterprise
Seats	1	2	5	25	Unlimited
Roles and owner-only actions	Included	Included	Included	Included	Included
Audit log	Included	Included	Included	Included	Included
Two-factor authentication	Soon	Soon	Soon	Soon	Soon
SAML single sign-on	Not included	Not included	Not included	Not included	Soon

Support

Feature	Free	Starter	Pro	Scale	Enterprise
Documentation, API reference, error reference	Included	Included	Included	Included	Included
Support tickets from inside the dashboard	Included	Included	Included	Included	Included
Free migration from another provider	Not included	Included	Included	Included	Included
Response time commitment	Not included	Not included	Not included	Included	Included
Uptime SLA	Not included	Not included	Not included	Not included	Soon

Honest comparison

Where we win, and where we do not

Every row in our column is a capability you can check against the API today, not a roadmap. The last two rows are ones we do not have and do not pretend to — a comparison that concedes nothing is an advert, and you would read it as one.

Capability	SadaSend	Resend	Postmark	Loops
Transactional email API	Yes	Yes	Yes	Yes
MCP server	Yes	Yes	Partial	Yes
Per-key recipient allowlist	Yes	No	No	No
Agent approval mode	Yes	No	No	No
Dry run / preview send	Yes	Partial	No	No
Scoped API keys	Yes	Partial	Partial	Partial
Per-key rate limit	Yes	Partial	Partial	Partial
Automatic complaint-rate throttle	Yes	Partial	Partial	Partial
Idempotency keys	Yes	Yes	No	Yes
Scheduled send and cancel	Yes	Yes	No	Partial
Batch send	Yes	Yes	Yes	Partial
Versioned templates	Yes	Partial	Yes	Partial
Webhook replay and per-attempt log	Yes	Partial	Partial	No
One-click unsubscribe injected (RFC 8058)	Yes	Partial	Partial	Yes
CSV log export	Yes	Partial	Yes	Partial
SMTP relay	Yes	Yes	Yes	No
Free deliverability tools	Yes	No	Partial	No
Marketing campaign suite	No	Yes	No	Yes
Visual email designer	No	Yes	No	Yes

Questions people actually ask

Is the free plan really free, or is it a trial?: It is free and it does not expire. You get 3,000 emails in total rather than 3,000 a month, so a side project can sit on it indefinitely and a real product will use it up in the first month. Every guardrail and all ten MCP tools are included — nothing is held back for paid plans.
Why is the free plan a total rather than a monthly allowance?: Because the alternative is paying to run other people’s production traffic for free, and because a shared sending reputation is the one asset an email provider cannot buy back once it is spent. A lifetime allowance is enough to evaluate everything honestly and small enough that abuse is not worth the effort.
What happens when I hit my limit?: On a paid plan, sending continues and the overage rate applies — $0.60, $0.50 or $0.40 per thousand depending on the plan. On the free plan there is no overage: sending stops, nothing is charged, and your logs and domains stay where they are.
Do the agent guardrails cost extra?: No, and they never will. Scoped keys, per-key rate limits, recipient allowlists, approval mode, dry run and the full MCP server are on every plan including the free one. Selling the ceiling only to people who can already afford it would mean nobody ever finds out why it matters.
Can I pay yearly?: Yes. Starter and Pro are 15% cheaper paid yearly, and Scale is 20% cheaper. Resend, Postmark and Mailgun do not offer annual billing at all.
Will you help me move from another provider?: Yes, at no cost on any paid plan. We move templates, sending domains, suppression lists and webhook endpoints, and verify them against your live traffic before you cut over. It is limited to the first 50 customers because we are a small team and would rather cap it than quietly stop replying.