Spark Email
Spark Email · b50c1dbd-1855-4e54-b07c-d3c3029e93d3
- Application ID
b50c1dbd-1855-4e54-b07c-d3c3029e93d3- Application
- Spark Email
- Vendor
- Spark Email
- Publisher
- Third-party vendor
- Uses EWS
- Yes, per a public source
- EWS status
- Moved to Microsoft Graph
- Vendor notice
- https://sparkmailapp.com/help/troubleshooting/microsoft-account-sign-in-required-after-spark-update
What to do
Microsoft lists this as Spark Email's application ID in its default mail-client consent policy. Spark says it now connects Outlook, Hotmail and Microsoft 365 accounts through Microsoft Graph; an account whose user skips the new sign-in falls back to the Legacy connection (EWS), which stops working when EWS is retired.
Sources
- Manage app consent policies - Microsoft Entra ID (Microsoft Learn) (2026-08-28), read 2026-10-21
- https://sparkmailapp.com/help/troubleshooting/microsoft-account-sign-in-required-after-spark-update, read 2026-10-21
Last updated 2026-10-21.