I've added my gmail account, but I get the following message when carry out the test:
Traceback (most recent call last):
File "site-packages\calibre\gui2\wizard\send_email.py", line 207, in test_email_settings
File "site-packages\calibre\utils\smtp.py", line 154, in sendmail
File "site-packages\calibre\utils\smtplib.py", line 647, in login
SMTPAuthenticationError: (534, '5.7.14 <
https://accounts.google.com/signin/c...gnsbtz\n5.7.14 4oKKJlteeLiGIKIRJoGujN0gm7-F_7ds14jFkVZGIDVgirZGyoR35sgGanJhaQO3tm8ejQ\n5.7.1 4 uF7rZtkwuXAOQ2PyDQZVlwe8cEb3PS2pwaeY7NmtHIlwyLzkkD qZHvlaLTCWxgR1vrhY09\n5.7.14 4btY0KnENE_pF7DYVswHiSsD-D2ftyJ5JIz1ve5kn0uOCXycNZTzxdyCkSMKuBIEbZg-8a\n5.7.14 80yBYsFDgQtheNg5ZLaeDU-1RhT2I> Please log in via your web browser and\n5.7.14 then try again.\n5.7.14 Learn more at\n5.7.14
https://support.google.com/mail/answer/78754 m2sm978307otd.32 - gsmtp')
Log:
connect: (u'smtp.gmail.com', 587)
connect: (u'smtp.gmail.com', 587)
reply: '220 smtp.gmail.com ESMTP m2sm978307otd.32 - gsmtp\r\n'
reply: retcode (220); Msg: smtp.gmail.com ESMTP m2sm978307otd.32 - gsmtp
connect: smtp.gmail.com ESMTP m2sm978307otd.32 - gsmtp
send: 'ehlo [192.168.0.20]\r\n'
reply: '250-smtp.gmail.com at your service, [187.240.69.152]\r\n'
reply: '250-SIZE 35882577\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-STARTTLS\r\n'
reply: '250-ENHANCEDSTATUSCODES\r\n'
reply: '250-PIPELINING\r\n'
reply: '250 SMTPUTF8\r\n'
reply: retcode (250); Msg: smtp.gmail.com at your service, [187.240.69.152]
SIZE 35882577
8BITMIME
STARTTLS
ENHANCEDSTATUSCODES
PIPELINING
SMTPUTF8
send: 'STARTTLS\r\n'
reply: '220 2.0.0 Ready to start TLS\r\n'
reply: retcode (220); Msg: 2.0.0 Ready to start TLS
send: 'ehlo [192.168.0.20]\r\n'
reply: '250-smtp.gmail.com at your service, [187.240.69.152]\r\n'
reply: '250-SIZE 35882577\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH\r\n'
reply: '250-ENHANCEDSTATUSCODES\r\n'
reply: '250-PIPELINING\r\n'
reply: '250 SMTPUTF8\r\n'
reply: retcode (250); Msg: smtp.gmail.com at your service, [187.240.69.152]
SIZE 35882577
8BITMIME
AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
ENHANCEDSTATUSCODES
PIPELINING
SMTPUTF8
send: 'AUTH PLAIN AGJlYWNhbm9oQGdtYWlsLmNvbQBCOEUzQTc3NDczNDgwNEY=\r \n'
reply: '534-5.7.14 <
https://accounts.google.com/signin/c...t=AKgnsbtz\r\n'
reply: '534-5.7.14 4oKKJlteeLiGIKIRJoGujN0gm7-F_7ds14jFkVZGIDVgirZGyoR35sgGanJhaQO3tm8ejQ\r\n'
reply: '534-5.7.14 uF7rZtkwuXAOQ2PyDQZVlwe8cEb3PS2pwaeY7NmtHIlwyLzkkD qZHvlaLTCWxgR1vrhY09\r\n'
reply: '534-5.7.14 4btY0KnENE_pF7DYVswHiSsD-D2ftyJ5JIz1ve5kn0uOCXycNZTzxdyCkSMKuBIEbZg-8a\r\n'
reply: '534-5.7.14 80yBYsFDgQtheNg5ZLaeDU-1RhT2I> Please log in via your web browser and\r\n'
reply: '534-5.7.14 then try again.\r\n'
reply: '534-5.7.14 Learn more at\r\n'
reply: '534 5.7.14
https://support.google.com/mail/answer/78754 m2sm978307otd.32 - gsmtp\r\n'
reply: retcode (534); Msg: 5.7.14 <
https://accounts.google.com/signin/c...1&plt=AKgnsbtz
5.7.14 4oKKJlteeLiGIKIRJoGujN0gm7-F_7ds14jFkVZGIDVgirZGyoR35sgGanJhaQO3tm8ejQ
5.7.14 uF7rZtkwuXAOQ2PyDQZVlwe8cEb3PS2pwaeY7NmtHIlwyLzkkD qZHvlaLTCWxgR1vrhY09
5.7.14 4btY0KnENE_pF7DYVswHiSsD-D2ftyJ5JIz1ve5kn0uOCXycNZTzxdyCkSMKuBIEbZg-8a
5.7.14 80yBYsFDgQtheNg5ZLaeDU-1RhT2I> Please log in via your web browser and
5.7.14 then try again.
5.7.14 Learn more at
5.7.14
https://support.google.com/mail/answer/78754 m2sm978307otd.32 - gsmtp