Saily Promo Code EDC10 applies a 10% discount to Saily travel eSIM plans, meaning the plan you choose costs 90% of its listed price once the code is accepted at checkout. If you have never bought an eSIM before, that sentence probably raises more questions than it answers, so this guide walks through the whole thing in order: what you are actually buying, what your phone needs to support it, how to set up an account, where the code goes, and what happens on the day you land. The discount is the easy part. The setup around it is where first-time buyers tend to get stuck.

There is one prerequisite that decides whether any of the rest is worth doing: your handset must be eSIM-capable and carrier-unlocked. An eSIM is a SIM profile installed as software rather than as a plastic card, and it relies on a small embedded chip inside the phone. Most flagship phones from the last several years have one. A phone that is still locked to a carrier, however, may simply refuse to install a third-party profile, and a 10% discount on a plan your phone cannot use is worth nothing at all.

Check this before you spend anything. It costs nothing to confirm and it is the single most common reason a first-time eSIM purchase ends in a support ticket rather than working data.

Saily is the travel eSIM product from Nord Security, the company behind NordVPN and NordPass. It launched in 2023 and sells prepaid mobile data plans to travellers through a single app, covering a large number of destinations — published figures range from 150 to more than 200, depending on how regions are grouped and counted.

Underneath the app, the mechanics are the same as every other eSIM reseller. Saily buys capacity from local mobile network operators in each destination and resells it to you as a plan. That is not a criticism, it is how the whole category works, and it is useful to understand as a newcomer because it tells you what you are really comparing between providers: app quality, plan structure, support and price, rather than any exclusive network.

The benefit over roaming is that your data runs across a local network at local rates instead of through your home carrier's roaming tariff. Because a modern phone can hold several SIM profiles at once, your home SIM stays active for calls and texts while the travel profile carries the data. You keep your own number, you keep receiving incoming calls, and you never have to open the SIM tray in an airport with a paperclip.

Saily's plan activation and management run through the app rather than a web dashboard. You can browse and buy on the official website, but the app is where the profile is installed, monitored and topped up, so install it early. Reviewers note this as a mild inconvenience compared with providers that allow full management in a browser, and it is worth knowing up front rather than discovering it at a boarding gate.

General account-creation advice applies here the same as anywhere. Use an email address you can actually access while travelling, since purchase confirmations and any support correspondence go there. If you are prompted to set a password, use one you have not reused elsewhere, and store it somewhere reachable from the device you are travelling with — not only in a desktop browser at home.

One more decision that matters more than it looks: install on the phone you are actually taking. An eSIM profile is typically tied to the device it was installed on, and moving it to a different handset mid-trip is usually not possible. If the purchase confirmation lands while you are holding a tablet, resist the temptation to set it up there.

Saily sells several shapes of plan, and the 10% reduction behaves identically on all of them — it scales with price, so a larger purchase produces a larger absolute saving. The categories are:

The pricing logic across the category is consistent: the wider the coverage, the higher the cost per gigabyte. For a first-time buyer this is the most valuable thing to internalise, because buying a global plan for a single-country trip is the most common way travellers overpay, and 10% off does not begin to compensate for that choice. Pick the narrowest plan that actually covers your itinerary, then apply the code to it.

Data allowance deserves the same honesty. Maps and messaging consume far less than video streaming. If you are unsure, note that auto top-up exists, which reduces the penalty for guessing low.

Two habits carried over from any other online purchase help here. Type the code rather than pasting it, because a pasted value often carries a trailing space that some forms reject. And treat the code field's own confirmation message as separate from the order total — if the field appears to accept the entry but the total has not moved, something has not registered, and reloading before paying is better than paying and hoping.

Because this is a flat percentage reduction rather than a bundle, a trial or a credit, it is easy to verify. The total before payment should be visibly lower than the total was before you typed the code. A 10% reduction means you pay 90% of the listed price, so the saving grows with the size of the plan.

Install the profile at home, where the internet is reliable, and activate it once you land. Switching off data roaming on your home SIM at that point is what stops your home carrier from quietly billing you alongside the eSIM you just bought.

From then on the app handles the lifecycle: monitoring usage and topping up. Auto top-up can be configured to add data when your balance falls to a low threshold, which is genuinely useful on a long trip, since running dry tends to happen at exactly the moment you need a map or a booking reference. The Nord Security heritage also shows up as security features layered onto the connection, including ad and tracker blocking; if you already run a VPN or a content blocker, the overlap is substantial and you may not notice much difference.

Tethering is supported on fixed data plans. Confirm it for the specific plan you buy, because hotspot restrictions are common elsewhere in the category. If you travel with a laptop, treat tethering as a requirement rather than a bonus.

Saily is a data-only service. There is no phone number attached, so standard calls and SMS are not part of it. Most travellers leave the home SIM active for voice and texts and let messaging apps cover the rest. The case worth planning for is SMS one-time passcodes from a bank — if you rely on those, the home profile has to stay enabled.

Unlimited plans are subject to fair usage, and speed throttling can apply after daily usage thresholds. This is standard across the industry, but it should shape expectations: unlimited here generally means unlimited at reduced speed after a threshold rather than full speed indefinitely, and heavy tethering or streaming is where you will feel it.

For someone who was already going to buy a travel eSIM, the code is a straightforward way to pay less for the same plan. It suits travellers with an unlocked, eSIM-capable phone who want their home number reachable while paying local data rates, and it suits larger or longer plans slightly better than the smallest ones, purely because 10% of a bigger number is a bigger number.

It suits you less if your handset is carrier-locked, if you need a phone number for calls or SMS on the travel line, or if you were about to buy a global plan for a trip to one country. The Nord Security backing is a reasonable proxy for the thing that actually matters with an eSIM reseller: that the company will still exist, and still have working support, when something goes wrong somewhere you do not speak the language. Apply the code — there is no reason not to — but spend your real attention on plan type and a realistic data allowance, because choosing a local plan over a global one for a single-country trip saves considerably more than 10% ever can.

Promotional terms, eligibility and values are set by the provider and can change at any time. Always confirm the current terms on the official site before signing up or completing a purchase.