Mailgun

Software95% confidence

Mailgun is a cloud-based email delivery and email API service used by developers and businesses to send, receive, and track transactional and marketing emails.

San Antonio, TX
mailgun.com
Owned by Sinch

About Mailgun

Mailgun is a cloud-based email delivery platform and email API service headquartered in San Antonio, TX, and now part of Sinch. It’s primarily used by developers, SaaS companies, and online businesses to send, receive, and track transactional and marketing emails such as password resets, order confirmations, notifications, and newsletters. Mailgun offers programmable APIs, SMTP relay, email analytics, routing, mailing lists, and deliverability tools like email validation and dedicated IPs, all managed through an online dashboard at mailgun.com.

A Mailgun charge typically appears on a bank or card statement when you (or your company) have created a Mailgun account and are paying for email sending, validation, or related add-ons. Charges may be for a monthly subscription plan, pay‑as‑you‑go email volume, overage beyond your plan’s included quota, or add‑ons such as dedicated IP addresses or deliverability tools. You may also see smaller, temporary authorization holds when you first add or update a card, during a trial period conversion, or when Mailgun verifies that a payment method is valid.

If you’re unsure about a Mailgun charge, start by signing in at app.mailgun.com and checking the Billing or Usage sections for invoices that match the date and amount on your statement. Look for charges under names like “Mailgun Technologies, Inc.” or “Sinch Mailgun” and review your account’s payment history, active domains, and any team members who may have set up the service. For questions or disputes, open a support ticket from your Mailgun dashboard or visit help.mailgun.com; include the last 4 digits of the card, the charge date, currency, and amount. If you suspect unauthorized use and can’t locate an account, contact Mailgun Support with those details and consider asking your bank to block or replace the card while the issue is investigated.

Bank Statement Variations

2 known variations

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

  1. MAILGUN TECHNOLOGIES, +18885718972 TX
  2. SINCH MAILGUN +18885718972 US

Frequently Asked Questions

Why am I seeing a monthly Mailgun charge on my card?

Mailgun typically bills once per month for your subscription plan plus any overage based on the number of emails sent, validations performed, or add‑ons used in the prior billing period. The amount depends on the plan tier you selected and your actual usage. You can see an itemized breakdown by logging in to app.mailgun.com and going to Billing > Invoices.

What types of Mailgun plans or pricing could explain the amount I’m seeing?

Mailgun offers plan tiers that include a certain number of emails per month, plus metered pricing if you send above that amount. Accounts may also be on a pay‑as‑you‑go model where you are charged based on actual monthly email volume and services like email validations or dedicated IPs. The charge you see is usually the total of your base plan (if any) plus usage‑based fees for the previous month’s activity; the exact structure is visible on your account’s Billing or Plans page.

How do I cancel or downgrade my Mailgun subscription so I stop getting charged?

To cancel or change your plan, sign in at app.mailgun.com, navigate to Billing or Subscription/Plans, and select the option to downgrade or cancel your account. Make sure you remove or disable active sending domains and stop routing traffic through Mailgun to avoid further usage charges. After cancellation, you will typically retain access until the end of the current billing period, but future renewals will not be charged.

Why do I see a small Mailgun charge or $0 authorization that later disappeared?

When you add or update a payment card, Mailgun (through its payment processor) may place a small temporary authorization hold to verify that the card is valid. This can appear as a low‑value or $0 test transaction on your online banking, then drop off automatically within a few business days. It is not an actual billed charge and will not be included in your final invoice.

How can I request a refund or dispute a Mailgun charge I don’t recognize?

First, log in to your Mailgun dashboard and compare the charge amount and date with your invoices under Billing > Invoices; a line‑item view will show what you were billed for. If you still believe the charge is incorrect or unauthorized, open a ticket at help.mailgun.com or via the Support link in your dashboard and provide the charge amount, currency, date, and the last 4 digits of the card used. Mailgun’s billing team can review for duplicate payments, obvious errors, or potential account misuse; refunds are handled case‑by‑case and are more likely when there is a clear billing mistake.

What are common Mailgun charge patterns or descriptors on my statement?

Mailgun charges may appear on your bank or card statement under descriptors such as “MAILGUN TECHNOLOGIES,” “MAILGUN,” or “SINCH MAILGUN,” often followed by the company’s location. Amounts are usually billed monthly and can vary depending on how many emails you sent or validated that month and whether you use extras like dedicated IPs. If you manage multiple Mailgun accounts or projects, you might see more than one Mailgun transaction in the same month, each tied to a different account or card.

Can I pause my Mailgun account so I’m not billed while I’m not sending emails?

Mailgun does not typically offer a formal "pause" mode, but you can reduce or eliminate charges by downgrading to a lower plan or pay‑as‑you‑go option and stopping all email traffic. Disable sending from your domains, update your applications so they no longer call the Mailgun API or SMTP, and then adjust your plan in the Billing or Plans section. This way, you avoid ongoing subscription fees and will only incur charges, if any, for residual or accidental usage.

How do I find which Mailgun account or project is tied to this charge?

If you manage several Mailgun accounts, log in to each and check Billing > Invoices for a charge that matches the amount and date on your statement. The invoice will list the last 4 digits of the card used plus the billing contact details, which can help you identify the correct project or team. If you cannot locate it, contact Mailgun Support through help.mailgun.com, provide the charge details from your bank, and they can help look up the transaction and associated account owner, subject to security and privacy checks.

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