Not sure if this EMS KENYA Product and Tariff Guide is up to date-- keeping in mind the recent tax changes-- but it should be some kind of reference for those importing things from abroad through Posta.
Hizi ni rates za kutuma bahasha na parcels… EMS does other deal with tax, customs deals with tax
Products offered:
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[li]EMS International[/li]Items can be sent to over 3,000 destinations worldwide from over 285 acceptance centers countrywide. A track and trace system providing prompt information on delivery and effective monitoring is available for most of the destinations in over 75 countries. EMS Kenya also offers customs clearance services for incoming items that are dutiable.
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https://posta.co.ke/site/courier-services/