Bank travel notifications used to be standard practice. Many banks have quietly moved beyond them. Knowing what your bank actually expects prevents your card from being declined at a critical moment.
Most major card issuers no longer require or even accept travel notifications. Their fraud systems have moved to real-time behavioral analysis, which handles international purchases without a heads-up.
Some smaller banks and credit unions still expect a notification. If yours does, the process is usually a two-minute call or an in-app toggle. Skipping it can trigger a card block on the first foreign transaction.
The more important thing to check is contact preferences. Fraud alerts by text work poorly in countries where you cannot receive your home-country SMS. Setting up push notifications through the bank's app, on a device with data roaming, is more reliable.
Also worth doing before departure: confirm the international collect-call number for card services, note your daily withdrawal and purchase limits, and update your travel dates in the app if it has that option.
One habit that pays off: log into your bank app every few days while abroad. It reassures the fraud system that you are the one making the charges and often prevents overzealous blocks.