Cookie Settings

This website uses cookies to improve your experience while browsing the website. You can change these settings at any time. Cookies classified as necessary are stored in your browser and are essential for the operation of the basic functionalities of the website. Third-party cookies will be stored in your browser only with your consent and help us analyze and understand how this website is used. You have the option to opt out of receiving these cookies, however, opting out of any of these cookies may make some functions unavailable. For information on deleting cookies, please consult the help function of your browser.


These types of cookies are absolutely essential for the website to function properly. This category only includes cookies that guarantee basic functionalities and security features of the website, and do not collect or store any personal information about users of the website.

Not necessary

Cookies that may not be particularly necessary for the website to function and are specifically used to collect personal data from the user through analysis, advertisements and other embedded content are called non-necessary cookies. It is mandatory to obtain the user's consent before executing these cookies on your website.

Cookie Description
bito This cookie is generally provided by and is used for advertising purposes. The main objective of this cookie is: Segmentation / Advertising. It establishes a unique identifier for the visitor that allows external advertisers (third parties) to target the visitor with relevant advertising. This combined service is provided by advertising centers, which provide real-time offers to advertisers.
bitoIsSecure Used to present relevant content and advertising to the visitor - The service is provided by groups of external advertising providers, who provide real-time offers to advertisers
Google Analitycs

To obtain more information regarding this type of cookies, you can obtain more information by consulting the document “Use of Google Analytics cookies on websites”

Cookie Description
__cfduid The "__cfduid" cookie is set by the CloudFlare service to identify trusted web traffic. It does not correspond to any user id in the web application, nor does it save any personally identifiable data.
_ga Internal measurement with Google Analytics. These cookies store a unique identifier to recognize the user on future visits to the website.
_gat_gtag_UA_126521787_2 Google Analytics - Used to speed up the application rate.
_gat_UA-366624-4 The _gat_UA cookie contains the identity number (_gat_ <***>) of the Google Analytics account or website.
_gid Internal measurement with Google Analytics.
MailTecK & customercomms Menú

Comunicaciones y transacciones multicanal
con plena validez legal probatoria

Postal, email, SMS, web, app y audio

Legal security in physical and electronic multichannel communications and transactions in the hands of a trusted partner

The digital transformation of companies and institutions in their relationships with customers, the public, employees and suppliers that implies a legal value which demands the preferential use of electronic channels, without forgetting the physical channels, certified by a Trust Service Providers in their communications and transactions.

MailTecK & CustomerComms offers services and solutions for the certification of communications and notifications, both electronic and through post or telephone, as well as electronic signatures, consents and certified web publications within the legal environment of Trust Services, as defined by the eIDAS European regulations.

The maximum legality and safety of all communications and transactions is guaranteed through post, email, SMS, web, app and audio, with the electronic and notarial custody of the content of the communications and the Evidence Certificates, using an integrated communications platform: CertySign.


Integrated platform for multichannel communications and transactions

Securely and comprehensively generates and manages all multichannel communications and transactions with legal value to the company and its customers and suppliers using the most efficient channels or combinations of channels.

Esquema CertySign

MailTecK & CustomerComms are the Trust Service Providers who intervene and guarantee both the security of the information and the legal security in the communications and physical and electronic multi-channel transactions of your company.

We intermediate by interposition in a neutral and independent manner between the parties and we safeguard the contents and evidence generated with the possibility of adding notarial intervention.

We protect your company’s data

Certificación ISO 27001

We have the ISO 27001 certification that guarantees us as guarantor of the security in the processing of your data. In this manner, only authorized users can access the data without risking integrity and confidentiality.

Trust Service Providers

Ministry of Economic Affairs and Digital Transformation

We are part of the group of trusted service providers of the Ministry of Economic Affairs and Digital Transformation for certified communications, electronic contracting, certified web publication and digital custody in accordance with European eIDAS regulations.



Platform for all your legal communications

SLegal security

Legal security

Maximum legal guarantee of your communications and transactions

Trusted Third Parties

Trust Service Provider

Certification and digital custody of communications and evidences



Services available from PC, mobile and tablet


Asociación Europea
Defensor del pueblo
MMT Seguros
Viajes el Corte Inglés


Avenida de la Recomba 14
P.E. La Laguna
28914 Leganés · Madrid
+34 916 895 665


Calle Balmes, 200
Planta 6º Puerta 4º
08006 Barcelona
+34 934 152 445


P. I. Ribera de Axpe, 11
Edif. BL-206-B-2ª
48950 Erandio · Vizcaya
+34 944 646 412


Torre Montesanto
Rua Afonso Praça, 30, 7th floor
1495-061 Algés · Lisboa
+351 21 121 5030


75 State Street,
Boston · MA 02109
+ 1 617 655 7200

Have you received an electronic communication managed by MailComms Group?

Have you received an electronic communication managed by MailComms Group?

Línea separación

It is likely that your product or service provider may need to send you a certified communication or that they are participating in an electronic signature process