ETravelSim does not offer a truly unlimited data eSIM for Bulgaria. All of its Bulgaria‑specific plans give a fixed allowance of 4GB per day for the validity period; once the 4GB quota is reached the connection is throttled to 128kbps.
For travelers who need larger data volumes, ETravelSim lists fixed‑data alternatives such as the Travel eSIM for Bulgaria Unlimited – 7 Days, which provides 4GB per day for seven days, and the Travel eSIM for Europe 50 GB – 30 Days, which supplies 50GB for a month. These plans can be more cost‑effective for heavy data users compared to the daily‑cap options.