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Transactional email plans built for developers

What is transactional email?

Enter your estimated sends per month

Your plan

$0.00 /month | 0 blocks @ $22/block
$0.00

Estimated cost per month
+ your Postlark monthly plan

Try it free*

Each block is a credit for 20,000 emails

Total blocksEmails per monthPrice per block
1 to 20 blocks1 to 400k emails$22/block
21 to 40 blocks400k to 800k emails$19/block
41 to 80 blocks800k to 1.6M emails$17/block
81 to 120 blocks1.6M to 2.4M emails$15/block
121 to 160 blocks2.4M to 3.2M emails$13/block
161+ blocks3.2M+ emails$11/block

*New transactional senders get up to 400 free sends on a verified domain. Restrictions apply.
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Made for developers who need mail to land in the inbox

Global delivery

Automatic spam-loop registration and pre-warmed dedicated IPs, wherever you send from.

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Analytics that scale

Pull delivery data from your dashboard, the export API, or a webhook you already run.

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Sending options

Tune how each message leaves the queue, and where the replies come back to.

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Developer guides

Start from worked examples and a knowledge base that keeps pace with the API.

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API reference

Every call, parameter, and sample response, documented on one searchable page.

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Start sending transactional email

Try it free* Restrictions apply. Learn more.

FAQS

What counts as a transactional email?
Do I need a Postlark account to send them?
What is included in the sandbox?
Which payment methods do you take?
Does pricing differ between the API and SMTP?
Can I buy blocks smaller than 20,000 emails?
What happens when I run out of blocks?
What happens to blocks I never use?
What if I get stuck?

Postlark for agencies

Running an agency? You probably want an agency account, with billing and domains kept separate per client.

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