While the era of simple web-to-mail gateways has shifted toward more integrated suites, services like Roundcube and RainLoop prove that you don't have to sacrifice power for portability. If you need a quick way to check your mail on the go, any of these alternatives will provide a safer and more feature-rich experience than the legacy services of the past.
(desktop) + web frontend – Not direct, but useful for notifications + quick web access. mail2web alternative