Where smtpify365 fits
A focused bridge for line-of-business software that can configure a custom authenticated SMTP server but cannot implement OAuth.
- Confirm STARTTLS and authenticated SMTP support.
- Confirm the application can use the connected mailbox as sender.
- Prefer direct Microsoft Graph integration for new software under active development.
- Document the application owner and revoke the connection when it is retired.
A simple migration path
Authorize the Microsoft 365 mailbox, store the generated one-time credentials in the client, then send a controlled test before enabling production notifications.
Know the boundary
smtpify365 preserves the SMTP client interface but does not bypass Microsoft sending limits, filtering, mailbox policy, or final-delivery processing.