Troubles with From button and Default mail

My e-mail accounts do not appear in "from " preventing me from sending emails . Nor can set default mail.

Hello, seems like you have no SMTP account/service setup in eM Client, navigate to Tools > Accounts > Your account and make sure an SMTP tab is present for your account(s).

In case it’s not, please make sure to re-setup your account. If the automatic setup is unable to auto-detect the SMTP server, please try manually setting up the account in Tools > Accounts > New account > Mail > Other, instead of using the automatic setup.

Regards,