feat(changelog): transactional-email-added-support-for-pkcs-related-atta 2025-10-07 (#5629)

* feat(changelog): add new entry

* fix(tem): review bene

Co-authored-by: Benedikt Rollik <[email protected]>

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Co-authored-by: Changelog bot <[email protected]>
Co-authored-by: ldecarvalho-doc <[email protected]>
Co-authored-by: Benedikt Rollik <[email protected]>

Author: 4 people

changelog/october2025/2025-10-07-transactional-email-added-support-for-pkcs-related-atta.mdx

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+---
+title: Support for PKCS-related attachment types
+status: added
+date: 2025-10-07
+category: domains-and-webhosting
+product: transactional-email
+---
+
+TEM now properly handles these encrypted or signed message formats.
+
+Check the full list of supported file extensions in the [supported file types documentation](https://www.scaleway.com/en/docs/transactional-email/reference-content/tem-capabilities-and-limits/#types-of-attachments-available).
+