Eskimo

Eskimo positions itself around data that doesn't disappear after a fixed period, unlike most eSIM plans with 30-day or 365-day expiration windows. For Thailand, they offer plans that let you use your balance without rush, though you'll want to confirm the exact terms for their current offerings.

This appeals to travelers who visit Thailand multiple times over months or years and don't want unused data to evaporate. If you're planning repeat trips or a slow-paced journey, the no-expiry angle reduces pressure to use everything in one visit.