create a time limit code for user active.

create a time limit code for user active.

Create html mail message.

Create New mail message use MailFrom and MailUser.

Create New mail message use MailFrom and MailUser.

Direct Send mail message.

Send email to verify secondary email.

Send email verify active email.

Async Send mail message.

SendCollaboratorMail sends mail notification to new collaborator.

SendIssueMentionMail sends mail notification for who are mentioned in issue.

SendIssueNotifyMail sends mail notification of all watchers of repository.

Send user register mail with active code.

Send reset password email.