Port mailserver requests logic from status-react

[adambabik]

As a developer,
I would like to receive historic messages using the same algorithm as in status-react
so that I can have better means to analyse it and measure throughput and bandwidth.

Acceptance criteria

TBD after examining status-react logic.

[adambabik]

status-react logic is implemented here https://github.com/status-im/status-react/blob/develop/src/status_im/mailserver/core.cljs.