Neven Sajko [off-list ref] wrote:
Gmail by default doesn't allow usage through send-email.
They say that send-email is "less secure" and that enabling it
makes it easier to break into my account.
Is send-email really less secure than the Gmail web browser
interface?
Like any email client, git send-email is only as secure as your
own practices. It can use git's native git-credential system
for handling passwords.
According to the following post from Javier, you will need
an extra password if you have two-factor auth enabled with Gmail:
http://mid.gmane.org/CALZVapn9KjXCpO+zaYuB6RSnG747u4a7e_m_HDg+uH-uz8UhQg@mail.gmail.com
Additionally, since (AFAIK) you can still get multiple Gmail
accounts, there's no reason you need to use your primary email
account (that might be tied to your private/personal life)
for sending patches to a public mailing list.
Disclaimer: I have little experience with Gmail myself and do
not endorse Google (or any corporation). I just care deeply
about the continued existence of vendor-neutral messaging.