Certified Email: your everyday mail, with a witness
An ordinary email is your word against the other party's. A certified email carries an impartial third party behind it, recording the complete message — body and attachments —, sending it, logging its delivery and sealing every step. The recipient just sees an email; you keep a certificate.
- Certified attachments
- No sign-up for the recipient
- 10-year custody
- Content and attachments recorded
- Sent and delivered
- Certificate sealed
supervised in Spain Double seal
Mensatek + FNMT on every certificate ISO 27001 & ISO 9001
independently audited 10-year custody
at no extra cost Spanish engineering
operating since 1998
Like sending an email, because it is sending an email
Write, with attachments
Compose the message and add whatever documents you need, from the dashboard or via API. Personalised bulk sending included.
We certify the journey
Body, attachments, the moment of sending and the acceptance by the recipient's server are recorded and sealed with timestamps.
Download the certificate
A PDF sealed by two qualified trust service providers (Mensatek and the FNMT), with 10-year custody and public verification.
Built for documents, not just notices
Fingerprinted attachments
Contracts, invoices, notices: every file is identified by its cryptographic fingerprint inside the certificate.
Arrives as a normal email
The recipient needs no new accounts or platforms: they open their usual inbox and they are notified.
Bulk and personalised
Thousands of notifications from a single list, each with its own data and its own individual certificate.
Delivery statuses
Track every sending from the dashboard: sent, delivered, bounced. The events go into the certificate and to your webhook.
10-year custody
The certificate stays in custody for a decade at no extra cost, verifiable by CSV code whenever you need it.
REST API
Automate certified notifications from your billing, HR or management systems with one HTTP call.
When the email must stand as evidence
Notices and terminations
Serve terminations or non-renewals with the attached document certified.
Invoice claims
Chase unpaid invoices with the invoice attached and proof of content and delivery.
Employment communications
Deliver payslips, changes of conditions or letters with a certified receipt.
Demands with documents
Formal demands that must include documents, intact and in full.
Replies to data subjects
Prove you replied within the deadline to a rights request.
Changes of terms
Notify contract changes to your whole portfolio in one sending.
And if the recipient claims it never arrived?
That is exactly the conversation this service ends. The certificate records the acceptance of the message by the recipient's mail server, with a sealed date and time, along with the exact content sent. Against an ordinary email — where all you have is your Sent folder — here the record is made by an impartial Trust Service Provider and can be verified by any third party for 10 years.
Legal framework
The certificate is an electronic document admissible as evidence under the eIDAS Regulation (EU 910/2014) and the Spanish Civil Procedure Act, sealed by two qualified trust service providers: Mensatek and the FNMT.
About certified email
What exactly gets certified?
The full body of the message, the attachments (with their cryptographic fingerprints), the moment of sending and the delivery to the recipient's mail server, all with timestamps.
How much does a certified email cost?
9 credits per sending: between €0.26 and €0.39 depending on the pack, VAT not included. See the pricing page.
Does the recipient need to register anywhere?
No: they receive the message in their usual inbox, like any other email. No intermediate platforms and no codes to collect.
Can it replace the burofax?
For most communications that are handled by burofax today, yes: it proves content, date and delivery with an impartial third party involved, at a fraction of the cost and with the attached document included. If the recipient only has a phone, pair it with the certified SMS.
Combine it with the rest of the platform
One account, one credit balance and one API for the whole platform.
Certified SMS
Certified notification that reaches any mobile phone
View serviceCertified RCS
Android rich messaging with an evidential record
View serviceCertified WhatsApp
Entire conversations backed by certified evidence
View serviceSMS Contract
Contracts accepted by replying to a text message
View serviceOnline contracting
Document signing via SMS, email or WhatsApp
View serviceIdentity verification
ID document plus facial biometrics in under a minute
View serviceTimestamping
Certain date and time for any file
View serviceYour next important email, with a certificate
A free account in one minute; the first sending goes out today. Questions first? +34 910 606 161.