Microsoft has announced the retirement of the SharePoint SendEmail API on October 31, 2025 which is used for internal SharePoint emails. This significant change will directly impact Nintex Workflow for Office 365 customers who utilize the following actions:
- Send an Email (when Internal Email is selected)
- Assign a Task (when Lazy Approval is not selected)
- Start a Task Process (when Lazy Approval is not selected)
To mitigate the potential disruption caused by this retirement, we strongly recommend migrating your affected workflows to Nintex Automation Cloud before October 31, 2025.
If you intend to keep your workflows within Office 365, you will need to update the affected actions to use external email.
Mitigation Steps:
- Send an Email: Select ‘External Email’ under email service option.
- Task Actions: Select the ‘Allow LazyApproval’ option.
Additional Reminder
Please note that Nintex Workflow for Office 365 will reach its end of support in December 2025 and will cease to function entirely in April 2026 due to the retirement of the Office 365 add-in app model.
We encourage you to proactively address these upcoming changes to ensure the continued smooth operation of your workflows.
If you have any questions or require further assistance, please feel free to respond to this post or contact our support team directly.
