How to compose and send email with gmail web

[Trains]

Hello,
I am trying to send email with bass.
but stuck on getting my html template to gmail body box
here is the example https://prnt.sc/pbGTOQkZVflJ
How do I write or get my content in this box?

[BAS Viet Nam]

@Trains You send email, why don't you use the "Send mail" module built into BAS?

[DuckDuck]

@BAS-Viet-Nam наверное потому что gmail, не поддерживает imap, smtp без авторизации по auth2 ?

[daunhonquangminh]

gmail phải dùng mật khẩu ứng dụng

[Trains]

@BAS-Viet-Nam Thanks for your reply.
I do not want to use Gmail API or smtp I woul like to use web browser to send email.

[Trains]

@daunhonquangminh Thanks for your response.
I want to send email using webmail. and I am stuck in compose box.

[Inwnew]

@Trains Сначала вам нужно сверстать html шаблон своего письма, затем вставить с помощью javascript. Только нужно понимать, что этот метод может быть "спален" гуглом

[Trains]

@Inwnew Thanks for your response.
I don't know how to use java
Could you please guide me how can I use java to insert my html content?