FREE2
Just got a Facebook ad for a free 2 Day Unlimited Data eSIM with code: FREE2. You have to select what country you are travelling in or region (e.g. EU) and then put in the code for it to be free. I haven't seen any deals for unlimited data eSims before but it seems this company is owned by Telefónica, a massive Spanish telco. Works in NZ as well.
Couldn't really find reviews. There is this strange travel video for Japan that said it worked well.
I tested the Australian eSim (I'm in Oz, posted on OzBargain) and the only thing they asked for was an email. No app, no payment, nothing. The email (in Spanish), comes through in a few minutes with a QR code which you scan. Fairly straightforward. The carrier shown is Singtel and it looks like routing is done through Singapore.
AU Speed Tests:
Google speed test from Melbourne shows 44.9/2.59 at 9:34pm, screenshot.
Ookla speed test was detecting me in Singapore and got 447.8Mbps download speed.
Deakin University gave me a 6.86/3.7.
What's the expiry date to redeem the offer?