Changelogs and bug fixes

Mailgun release notes

The latest news on features and changes to the Mailgun platform.

Mars 2026

mars 19, 2026

Mise à jour de la charge utile de la signature des webhooks

Mailgun has updated the signature payload for webhooks when an event occurs on a subaccount. When a webhook event fires on a subaccount, the signature payload will now include a parent-signature field that identifies the primary account. 

Previously, receiving servers needed to account for the unique signature of each individual subaccount to verify webhook authenticity. With this update, you can reference a single parent signature to validate events across all of your subaccounts, simplifying your verification logic. 

For more information, view the update documentation on securing webhooks.  

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mars 5, 2026

Nouvelle expérience des modèles

Mailgun has expanded the Mailgun Templates API with a series of quality-of-life improvements, including the debut of account-level templates. These improvements give you more flexibility and control over how you manage and send templates across your account. 

Key updates include:  

  • Domain-level template improvements: The domain-level templates API now includes search, pagination, rename, and copy functions, making it easier to manage large libraries of templates at the domain level. 
  • Account-level templates: You can now create and manage templates at the account level, allowing a single template to be used across any of your sending domains. This is the most flexible way to manage your template library and comes with the same quality-of-life functions: search, pagination, rename, and copy. 
  • New Template ID: Both domain-level and account-level templates now include a unique template ID that can be used interchangeably with the template name when referencing a template during sending. This is especially useful if you rename a template — your code referencing the ID won't need to change. 

These updates reduce friction in template management and make the Templates API more robust for teams working across multiple domains. 

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