Bordersim does not provide an unlimited‑data eSIM for Mexico. All of the plans that they list for Mexico have a hard data cap, with the largest being a 50GB bundle that must be used within 30 days.
If a traveler needs a large data allowance, Bordersim offers fixed data plans such as the 50GB 30‑day option and the 20GB 30‑day option, both of which give high‑speed 5G access throughout Mexico. These fixed bundles can be more cost‑effective for typical usage, unless the user is an extremely heavy data consumer who might prefer a Pay‑as‑you‑go arrangement.