Yes, ESIM.DOG offers unlimited eSIM plans for Malaysia. The provider lists several options with a data cap of Unlimited, validity periods ranging from 1 day to 30 days, and prices from about $1.50 USD for a 1‑day plan up to around $18.23 USD for a 30‑day plan. All plans are marketed for 5G coverage and state that speed may be throttled; the maximum speed advertised is 1000 kbps, but actual speeds can be lower depending on the plan.
Because the plans are subject to a Fair Usage Policy, speeds may be reduced after heavy usage, so travellers who are concerned about potential speed restrictions should contact ESIM.DOG directly to confirm the typical data allowance that can be used at normal speed.