eSimfly does not offer a true unlimited data eSIM for Greece. All of its plans for the country have fixed data caps expressed in gigabytes or a daily allowance (e.g., 3 GB/day) that apply over a specified validity period. After the allotted amount is used, the speed is reduced to 1000 kbps; the plan is still limited in data volume.
For travelers seeking larger data allowances, eSimfly provides fixed plans such as Greece Unlimited 30 Days, which offers 3 GB/day for 30 days, or the O2 Unlimited International plan, which supplies 35 GB for 30 days. These options give substantial data without the constraints of a strictly short‑term, low‑volume bundle.