smtp

func (*Client) Send ¶

func (c *Client) Send(ctx context.Context, to, subject, body string) (err error)

func (*Client) TestConnection ¶

func (c *Client) TestConnection(ctx context.Context) (err error)

TestConnection dials the SMTP server, upgrades to TLS when offered, and authenticates, without sending any mail, to verify the configured host/port/credentials work. The dial honors ctx cancellation, and — when ctx carries a deadline — the whole handshake (STARTTLS/Auth included) is bounded by it, so a host that never responds fails once ctx expires instead of hanging indefinitely.