Welcome

Welcome

Welcome to AP Essentials Help. The content you see depends on whether you access help from AP Essentials Office or AP Essentials Admin Center.

  • Office Help: for AP Essentials users who verify and approve documents as part of their daily work.

  • Admin Center Help: for administrators who set up and maintain AP Essentials. Admin Center Help is the more comprehensive of the two help systems and includes Office Help also. You're reading Admin Center Help now.

Upcoming changes to the Email Input service

Effective August 3, 2026, we will begin a phased rollout of updates to improve security and performance.

Email size limits

To ensure reliable delivery, email attachments must be kept to 30 MB or less. While the system supports a maximum email size of 40 MB, attachments are encoded during sending, which increases their size

For larger payloads, please use the API, which supports file sizes up to 100 MB.

Encryption requirements

As part of our security improvements, we are moving toward requiring TLS 1.2 encryption for all incoming emails. Most customers are already compliant and will not experience any changes.

If you are currently receiving email that does not use TLS 1.2 encryption, Tungsten Support will contact you with guidance.

Important security update

Starting November 1, 2026, the SFTP connector will no longer support Digital Signature Algorithm (DSA) keys.

DSA keys are no longer considered secure and do not protect against modern attacks. This change is necessary to keep your data transfers secure and aligned with current industry standards.

If you use DSA keys, switch to a modern, secure key type before the deadline to avoid service disruption.