Using vgo

Signed-off-by: Vishal Rana <[email protected]>

[Email] client quit instead of close

Signed-off-by: Vishal Rana <[email protected]>

[Email] Fixed empty body

Signed-off-by: Vishal Rana <[email protected]>

[Email] Text to BodyText & HTML to BodyHTML

Signed-off-by: Vishal Rana <[email protected]>

Fixed labstack#18

Signed-off-by: Vishal Rana <[email protected]>

JSON tags for email message

Signed-off-by: Vishal Rana <[email protected]>

Fixed email attachment/inline

Signed-off-by: Vishal Rana <[email protected]>

Fixed email quoted-printable encoding

Signed-off-by: Vishal Rana <[email protected]>

Added symbols for random string

Signed-off-by: Vishal Rana <[email protected]>

added panic, moved fatal out of leveled logging

Signed-off-by: Vishal Rana <[email protected]>