MTX Connect does not provide an unlimited data eSIM plan for Bulgaria. All of the available plans for this country list a hard data cap, such as 10GB, and are valid for a fixed period of 30 days.
For travelers who need a large amount of data, MTX Connect offers fixed data plans. For example, the 10GB LOCAL plan gives 10.11GB of data for 30 days at a price of $11.25 USD, and the Bulgaria 10GB Unthrottled plan offers 10GB of data for 30 days at $18.63 USD. These fixed‑data options may be more cost‑effective for most users, unless the traveler is an extremely heavy data consumer who would prefer an unlimited plan.