One way to achieve snoozing in any email client is to forward (and archive) the email to 1day@fut.io (or monday@fut.io etc, the syntax is pretty complete and fl

One way to achieve snoozing in any email client is to forward (and archive) the email to 1day@fut.io (or monday@fut.io etc, the syntax is pretty complete and flexible). They will send you back the email at the specified time and date, so it ends up back in your inbox. No GUI but pretty efficient in practice.