Thunderbird Gmail Oauth2 Sign In

Newsmr. macs class 2019 20. Cannot access Yahoo mail for about two weeks now with T-bird. I am using the latest version with inbound.att.net and outbound.att.net with Oauth2 selected. I have an Oauth password from AT&T, when I try to use this I get a pop up that asks me for sign in credentials. When attempting sign in it says I need to enable cookies. (Firefox) I have given 'cookie' permission to https://att.com, https://yahoo.com, https://login.yahoo.com. Can't get past this, any suggestions or additional permissions I might try?

Thunderbird

Since most all logic in Thunderbird runs with chrome privileges, a compromise of Thunderbird is still a compromise of the credentials, but in cases like the Gaia Email app, such an IMAP protocol is much riskier than the oauth2 approach. Jul 01, 2020 Thunderbird Now as an end user, start Thunderbird. Do not start configuring the account yet, as we first need to modify a Thunderbird setting to allow for successful Modern Authentication through a browser popup. Click the ‘hamburger’ menu to open the Options window. Scroll all the way down, and open the Config Editor. Using Thunderbird with Gmail and OAuth2 allows you to overcome Google's blocking of 'less secure apps'. By using IMAP (and SMTP), you can set-up Thunderbird to handle OAuth2 authentication just fine, and not just with Google but also with other providers. Madden. SysTools Gmail Backup Software Gmail is quiet comfortable webmail that has a feature-rich environment. But, data loss is still a horror. SysTools Gmail Backup is an emerging tool that has top-of-line features incorporated with premium interface to backup Gmail emails, calendars, contacts, Google Drive documents for on-premise platform.