-------------------------- **Library - Chore** - [PR 929](https://github.com/sendgrid/sendgrid-python/pull/929): update GitHub branch references to use HEAD. Thanks to [thinkingserious](https://github.com/thinkingserious)!
6.4.5
Not secure
-------------------------- **Library - Docs** - [PR 926](https://github.com/sendgrid/sendgrid-python/pull/926): remove last references of "whitelabel". Thanks to [childish-sambino](https://github.com/childish-sambino)!
6.4.4
Not secure
-------------------------- **Library - Chore** - [PR 925](https://github.com/sendgrid/sendgrid-python/pull/925): migrate to new default sendgrid-oai branch. Thanks to [eshanholtz](https://github.com/eshanholtz)!
6.4.3
Not secure
-------------------------- **Library - Fix** - [PR 921](https://github.com/sendgrid/sendgrid-python/pull/921): allow general email type for to_emails. Thanks to [eshanholtz](https://github.com/eshanholtz)!