--- title: "DEH\u00fa, AEAT & Social Security E-Notification Monitoring | Accounting Spain" description: "24/7 monitoring of your DEH\u00fa, AEAT and Social Security mailbox. Zero missed deadlines, zero penalties for unread e-notifications. Professional service with fixed monthly fee." canonical_url: "https://www.accountingspain.com/en/notifications-monitoring/" last_updated: "2026-04-26" --- [Home](/en/) / E-notification monitoring Continuous tax protection # Never miss a notification *again* We monitor your DEHú, AEAT and Social Security mailbox 24/7. When a notification arrives, you know about it before a single day of your deadline runs out. Activate monitoring See the risks 10 days to respond before the deadline triggers 13,173 public bodies that send via DEHú 24h maximum response time notifications_panel **Alert:** 1 critical notification detected — deadline: **9 days remaining** ! AEAT — Spanish Tax Agency Information request — Modelo 303 Q3 Urgent SS Social Security Treasury Self-employed contribution communication 2025 5 days DGT DGT — Traffic Authority Resolution of file 2025/DGT Handled IGIC Canary Islands Tax Authority IGIC Q3 filing confirmation Accepted +1000 notifications managed · 0 missed deadlines The problem ## What happens when *no one is watching* An unread notification in DEHú does not disappear — it is automatically deemed delivered after 10 days. And that triggers real consequences. 01 ### Final tax assessments If you fail to respond on time to an AEAT request, the provisional tax assessment automatically becomes final. With no possibility of appeal. 02 ### Surcharges of up to 20% Missing deadlines on debt notifications triggers automatic surcharges of 5%, 10% or 20% depending on the time elapsed, plus late-payment interest. 03 ### Seizures with no further notice Once a debt enters enforcement, the AEAT can seize bank accounts, real estate or commercial credit without having to notify you again. 04 ### Lapsed traffic fines DGT (Spanish Traffic Authority) notifications in DEHú activate appeal periods and early-payment discounts. If unmanaged, fines grow and you lose the 40% discount. 05 ### Loss of grants and refunds Decisions on subsidies, grants and refunds are also notified through DEHú. Failing to accept them on time can mean losing the right to collect them. 06 ### Tax inspections without preparation Notices opening tax inspection proceedings arrive via DEHú. Finding out late removes the documentation-prep window that often makes the difference. The service ## What we do *for you* every day It's not an automatic reminder. It's a human team that reviews, interprets and acts on every notification before any deadline runs out. ### Daily DEHú monitoring We access your DEHú mailbox every working day. Any new notification is detected the same day — not after 5 or 9 days. ### Full agency coverage AEAT, Social Security Treasury, DGT, Ministry of Labour, Canary Islands Tax Authority and any other body that uses DEHú or the AEAT mailbox. ### Instant alert with deadline As soon as we detect a new notification, we send you an alert via email or WhatsApp with the type, issuing body and the exact number of days you have to respond. ### Classification and urgency Not all notifications are equal. We classify each by type (request, assessment, seizure, communication) and urgency level. ### Response handling included In the full plans we don't just alert you: we draft and submit the responses, statements of allegations or appeals before the administration. ### Complete history Chronological log of every notification received, action taken and deadline met. Documentation available to evidence compliance. Coverage ## Agencies *under watch* DEHú centralises notifications from over 13,000 public bodies. These are the ones with the highest tax and legal impact for businesses and self-employed professionals. AEAT Spanish State Tax Agency. Information requests, assessments, inspections, seizures. Critical Social Security Treasury Social Security contributions, registrations, employment penalties, refunds. Critical DGT Traffic fines, file resolutions, communications about company vehicles. Important Canary Islands Tax IGIC, regional Canary Islands taxes, regional grants and subsidies. Important Ministry of Labour Labour inspections, penalties for breaches of the Workers' Statute, ERTEs and collective procedures. Important Other agencies Town councils, regional governments, regulatory bodies and over 13,000 sender entities. Full coverage In the panel shown: +1000 notifications handled from DEHú and 232 from the AEAT — with zero missed deadlines. The countdown ## What happens day by day without *monitoring* The clock starts the moment the notification lands in DEHú — even if you have not opened it. 0 Day of arrival #### The notification arrives in DEHú The AEAT, Social Security or another agency deposits the notification in your mailbox. The legal deadline starts to run regardless of whether you have read it. We alert you the same day 1–9 Working days #### Action window Real time to read, evaluate the content, prepare documentation if it is an information request, and decide whether to appeal or accept. With active monitoring, you keep the full window. 10 Calendar days #### Notification is automatically deemed delivered Even if you have not opened DEHú, the law considers the notification served. From here, the appeal, allegation or voluntary-payment deadlines start counting. Without monitoring, you might still not have seen it +15-30 Following days #### Appeal and payment deadlines expire Depending on the type of notification, the deadlines to appeal, file allegations, pay with discount or submit documentation expire. After this, the debt enters enforcement or the assessment becomes final. Frequently asked questions ## What people *ask us* What is DEHú and why does it matter? DEHú (Dirección Electrónica Habilitada única) is the official Spanish electronic mailbox where the AEAT, Social Security and over 13,000 public bodies send notifications with full legal effect. The catch is that a notification is automatically considered "delivered" after 10 days even if you have not opened it, which triggers appeal deadlines and can lead to penalties if not acted upon in time. Don't I get automatic alerts from DEHú itself? DEHú can send automatic alerts to the email you have registered — but only if it is correctly configured, the email address has not changed, and the alerts don't end up in spam. In practice, many self-employed and businesses don't have this alert set up or don't actively monitor it. Our service is an additional security layer with daily human verification and active alerting. Do you need access to my digital certificate? No. To access DEHú on your behalf we need a representation authorisation before the AEAT, which we arrange ourselves as part of the onboarding process. We use our own legal representation — the correct and secure way to manage third-party mailboxes. Can I subscribe to monitoring without full advisory services? Yes, the service is fully independent. You can subscribe even if you have another tax advisor or manage your accounting yourself. When we detect a notification, we forward it to you with all the information so that you or your advisor can handle it. What happens if I receive an inspection or seizure notification? Those are exactly the type of notifications this service exists for. When detected, we alert you immediately via WhatsApp and email with maximum-urgency classification. In plans that include response, our team contacts you the same day to assess the situation and define the strategy. Get started ## Your mailbox *under control* from today Onboarding in 24 hours. No long-term commitment. Initial consultation, no commitment, to assess your situation and how many notifications you may have received without knowing. Activate monitoring [WhatsApp directly](https://wa.me/34621392584?text=Hi%2C%20I%27m%20interested%20in%20the%20DEH%C3%BA%20monitoring%20service.) Onboarded in 24h No long-term commitment Initial consultation, no commitment Assigned personal advisor Nationwide coverage ## Let's start with *your mailbox* Tell us your situation and we'll get back to you within 24 hours with the next step to activate monitoring. [info@accountingspain.com](mailto:info@accountingspain.com) [+34 621 39 25 84](tel:+34621392584) Lanzarote, Canary Islands & all of Spain (online service) [ ](https://wa.me/34621392584?text=Hi%2C%20I%27m%20interested%20in%20DEH%C3%BA%20monitoring.)