Sending error after changing Office 365 account password

Problem

After having changed the password of an Office 365 account used as a sending account in the app, newsletters are no longer sent.

Cause

JungleMail for Office 365 does not require and does not store Office 365 account passwords. Instead, the app uses access tokens provided by Microsoft. The tokens are only valid temporarily and give the app limited access to a user’s data. If the Office 365 account password is changed, the access token is no longer valid and that sending account will not be able to send emails.

Solution

 To renew the token and fix the issue, take the following steps:

1. Go to Sending Accounts in the app settings

2. Hover over the sending account box that has it's token invalidated, and select Reauthorize Office 365 sending account.

This process will reauthorize the account and new tokens will be issued.