Postmark

Software95% confidence

Postmark is a cloud-based email delivery service focused on transactional and notification emails for applications and websites, offering APIs, SMTP, and analytics for reliable, high‑deliverability email sending.

Chicago, IL
Owned by ActiveCampaign

About Postmark

Postmark is a cloud-based email delivery service designed specifically for transactional and notification emails sent by applications, SaaS products, and websites. Instead of marketing newsletters, Postmark focuses on critical messages such as password resets, order confirmations, receipts, and system alerts, ensuring they arrive quickly and reliably. The service offers developer-friendly APIs, SMTP sending, message streams, webhooks, detailed delivery and open tracking, and tools for managing templates and email authentication (SPF, DKIM, DMARC). Postmark is operated from Chicago, IL and is widely used by software companies, e‑commerce sites, and online platforms that need dependable, high‑deliverability email infrastructure.

A Postmark charge on your bank or card statement typically appears when your company or organization is paying for email sending through Postmark. This might be a monthly subscription based on a plan that includes a certain number of emails, or on-demand email credits that you or a colleague purchased. You may also see charges after a free trial transitions into a paid plan, when your usage exceeds your included email volume for the month, or when an existing subscription renews automatically. In some cases, you might briefly see a small authorization or verification transaction when you first add or update a payment method.

If you’re unsure about a Postmark charge, start by logging into your Postmark account at postmarkapp.com and checking the Billing or Account section for invoices and payment history. Look for emails from Postmark in your work or company email address, as receipts and billing notices are typically sent there. If you still have questions, you can contact their support team through the Help/Support section of the dashboard or via support@postmarkapp.com, providing the last 4 digits of the card, the charge amount, and date (but never your full card number). Common issues—such as multiple accounts in the same company, old test accounts still billing, or usage exceeding your plan—can usually be resolved by adjusting your plan, canceling unused servers/accounts, or requesting a review or refund where appropriate.

Bank Statement Variations

1 known variations

These are the raw merchant codes that appear on bank and credit card statements that we've identified as belonging to Postmark.

  1. POSTMARKAPP.COM +18003570402 US

Frequently Asked Questions

What are typical Postmark charges and pricing amounts I might see on my statement?

Postmark pricing is based primarily on the number of emails you send each month. As of 2024, common self‑serve plans often include tiers starting around tens of thousands of emails per month, with overages charged at a per‑thousand‑emails rate, and there are also pay‑as‑you‑go credit purchases for occasional sending. Exact pricing, currency, and tax can vary by region and account, so the most accurate amounts will be listed in your Postmark dashboard under Billing and on your PDF invoices. If you see a recurring amount each month, that’s usually your selected plan fee plus any applicable taxes.

Why am I seeing a recurring monthly charge from Postmark?

A recurring Postmark charge usually indicates that your organization has an active email sending plan that renews automatically each billing cycle (typically monthly). Postmark charges your saved payment method at the start of each new billing period for your base plan, and may add overage fees if you send more emails than your plan includes. Someone on your team—often a developer, IT admin, or operations/finance user—likely set up the account and card. You can confirm this by logging in and checking the Billing section or asking your internal team who manages email infrastructure.

How do I cancel or pause my Postmark subscription so future charges stop?

To cancel or downgrade, log into your Postmark account, go to the Billing or Account/Plan area, and follow the prompts to change your plan or close your account/servers. If your account has multiple servers (environments or projects), make sure you disable or delete any that are no longer in use, as they might still generate traffic and charges. Once you cancel, future automatic renewals will stop, but you’ll typically retain access until the end of the current billing period. If you cannot access the account (e.g., the account owner left the company), contact support@postmarkapp.com with business details so they can help verify and update or close the account.

Can I get a refund for a Postmark charge I don’t recognize or for unused sending?

Postmark generally bills in advance for plan capacity or credits and may not automatically refund for unused sending, but they do review billing questions and disputed charges individually. If you see a charge you don’t recognize, first confirm whether anyone in your company is using Postmark, then check invoices in the dashboard. If it still appears unauthorized or mistaken, contact Postmark support with the exact charge amount, date, and the name on the card so they can investigate and, where appropriate, issue a partial or full refund or help you dispute the charge. They may also assist in consolidating or closing duplicate or old test accounts to prevent future charges.

Why do I see a small or temporary Postmark charge on my card (like $1 or a very low amount)?

A small or temporary Postmark transaction is usually an authorization hold placed when you add or update a credit card in your account. This is used to verify that the card is valid and able to accept charges and is not an actual billed fee. These authorizations typically disappear or are reversed by your bank within a few business days. If a small charge remains longer than expected, check your Postmark invoices and then contact your bank or Postmark support if it doesn’t match any listed invoice.

How can I see exactly what my Postmark charge was for?

All detailed billing information for your account is available inside the Postmark dashboard under Billing or Invoices. There you can see your plan level, email usage, any overage charges, taxes, and downloadable PDF invoices for each billing period. Invoices usually list your company name, billing contact, and the last 4 digits of the card charged, which you can match against your statement. If you don’t know which login is tied to the charge, search your email for ‘Postmark receipt’ or ‘Postmark invoice’ to find the associated account email address.

Can I change the card or billing contact being charged by Postmark?

Yes, account owners or users with billing permissions can update payment details and billing contacts from within the Postmark dashboard. Go to Billing, then update your credit card information and the billing email and company details that appear on invoices. Changes apply to future renewals and new invoices; past invoices will keep the old details for record keeping. If you no longer have access to the original owner’s login, reach out to support@postmarkapp.com with proof of company association so they can help transfer or update billing ownership.

Why did my Postmark bill suddenly increase compared to previous months?

A sudden increase usually means your email volume exceeded your previous plan’s included amount, triggering overage charges or an automatic upgrade to a higher tier if you chose that option. It can also happen if you added new servers, enabled additional environments, or if taxes and regional pricing changed. Check the Usage or Billing section in your Postmark account to see a breakdown of emails sent by server and any overage line items on your invoice. If the increase was unexpected, you can adjust your plan, remove unused servers, or contact support to review whether a different plan would better match your sending patterns.

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