You're not using the official Gmail app

[janusz]

Originally Posted by chrisretusn

Back in 2013 I traveled to the US for a couple of months. I checked my mail almost daily from my laptop while there, it took three weeks for Google to notice unusual activity.

My impression is that Google has become more vigilant since then....

[Bamb0]

Originally Posted by TenFour

If it is like other advertising on the Internet you will get that prompt for weeks and months.....

Yes sadly you are probably right

[EricG]

There are two ways the email client can access gmail.

IMAP (with opt label extensions). I don't think that lets on that you're using Android. This should just require email and password to set up.

The HTTP protocol whose name I forget. The Gmail app uses this. HTTP supplies OS and HTML identification. This will open a browser with the standard Google login.

[chrisretusn]

Originally Posted by janusz

My impression is that Google has become more vigilant since then....

Planning another trip in the fall, get to test that out.

[TenFour]

Originally Posted by chrisretusn

Planning another trip in the fall, get to test that out.

One thing that can ease the problem greatly is if you have a phone service that will continue to work in the other country you are going to, thereby allowing you to receive SMS codes. Gmail treats a "recognize device" better when traveling, and sometimes you can continue to get email on your phone even if you can't login via computer. Have multiple methods set up for 2FA: push, SMS codes, and an authenticator app. One of them might work. Still, I have found that they don't always work, so the ultimate fallback might be printed one-time codes carried in your wallet.