Email Marketing

Email reaches people in a space they consider their own, with a message they have consented to receive. When that message is relevant, well-timed and well-designed, few channels come close to its capacity for generating engagement, loyalty and direct revenue.

But the inbox is also one of the most competitive environments in digital marketing. The difference between an email that is opened, read and acted upon and one that is ignored is almost never the frequency of sending: it is the relevance of the content, the quality of the design, the precision of the segmentation and the intelligence of the automation that delivers the right message to the right person at the right moment.

Esario has been developing and managing email marketing programmes for over twenty years, with particular specialisation in the Hotels and travel industries, and a structured methodology that covers every dimension of an effective email strategy: segmentation, design, content, automation, legal compliance, testing and reporting.

Customer segmentation: the foundation of relevance

An email marketing programme that sends the same message to every contact in a database is not a communication strategy: it is a broadcast. Relevance begins with segmentation, and segmentation begins with a deep understanding of who the customers are, what they want, and where they are in their relationship with the brand.

Esario builds segmentation strategies tailored to the specific characteristics of each client's audience. In the hotel sector, this means distinguishing between leisure and business travellers, tour operators, FIT clients, group bookings, corporate accounts and government contacts — further refined by booking channel, stay frequency, average spend and geographic origin. Each segment receives communications designed specifically for its profile and its moment in the customer lifecycle, from pre-arrival preparation to post-stay re-engagement.

The same logic applies across all sectors. In E-Commerce, segments are built around purchase history, browsing behaviour and lifecycle stage. In Finance and Bio-Medical, where regulatory constraints on communication are more stringent, segmentation ensures that every message is not only relevant but compliant.

Newsletter design and format

The design of an email is not a cosmetic concern: it is a functional one. A poorly structured template loses readers before they reach the content. A design that does not render correctly on mobile devices loses the majority of the audience before they read a single line. A landing page inconsistent with the email that led to it loses conversions at the last step.

Esario manages the full design and technical production of email communications: template design aligned with the client's visual identity, landing page design consistent with the email content and optimised for conversion, HTML email production tested across the main email clients and devices, and integration into the client's platform — whether Mailchimp, HubSpot, Klaviyo or any other major system.

Content, automation and the complete campaign workflow

Effective email content does not exist in isolation: it is part of a broader communication ecosystem. Esario develops email content strategies coordinated with other active channels — paid search, display advertising, social media, SEO — ensuring that messages reinforce rather than contradict the broader communication narrative and that promotional moments are amplified coherently across all touchpoints.

The operational workflow Esario manages for each client covers copywriting for subject lines, preheader text and body content; conversion optimisation of calls to action and content hierarchy; list management including hygiene, growth and suppression; automated email sequences for booking confirmation, pre-arrival communication, post-stay follow-up and re-engagement; behavioural trigger campaigns activated by specific user actions; tracking and goal configuration; A/B testing of subject lines, content variants and send times; and weekly or monthly reporting on opens, clicks, conversions and unsubscribes.

Legal compliance is built into every programme: GDPR in Europe, CAN-SPAM in the United States, and the applicable regulations in each market where campaigns are active.

Email marketing in 2026: the age of hyper-personalisation

The email marketing landscape is undergoing a transformation as significant as any in its history. The forces driving it are the same forces reshaping the broader digital environment: Artificial Intelligence, privacy regulation and rising consumer expectations.

In 2026, AI-driven email campaigns can automatically adjust subject lines based on what a specific contact is most likely to open, personalise entire email layouts and not just copy, recommend products or services based on predictive behaviour modelling, optimise send times for each individual rather than by audience segment, and continuously learn and improve performance without manual intervention.

Open rates increased by an average of 156% when emails arrived at individually optimised moments — and the compound effect of better timing improved overall subscriber engagement and deliverability metrics significantly.

Privacy is the other defining force. As third-party cookies disappear and regulations tighten, first-party and zero-party data — information that customers actively and willingly share — are becoming the primary fuel for personalisation. Brands that use zero-party data inside their CRM workflows see significantly higher open and engagement rates, because the messaging finally aligns with what the customer actually wants.

Static newsletters are giving way to interactive experiences: in-email shopping carts, clickable product galleries, polls and gamified content that keep readers engaged inside the inbox and generate richer data on customer preferences.

Esario integrates all of these developments into its email marketing methodology — building first-party data strategies from the client's own booking and behavioural data, implementing AI-assisted personalisation within the platforms already in use, designing interactive email experiences where the technology supports it, and maintaining deliverability and compliance as the non-negotiable foundation of every programme.

Email Marketing and Artificial Intelligence

In segmentation, AI models analyse behavioural, transactional and contextual data to identify micro-segments and predict which contacts are most likely to respond to which type of message — allowing campaigns to be targeted with a precision that manual segmentation cannot approach.

In content development, AI-assisted tools generate and test subject line variants, personalise body content at scale, and identify the combinations of message elements that produce the highest engagement for each audience segment.

In send-time optimisation, machine learning models analyse each contact's historical engagement patterns to determine the moment at which they are most likely to open and act on an email — replacing the blunt instrument of a single scheduled send with individually optimised delivery.

In churn prediction, AI systems identify subscribers showing early signs of disengagement and trigger re-engagement sequences before they unsubscribe or become permanently inactive — protecting the value of the database over time.

In reporting and analysis, AI-powered dashboards surface actionable insights from campaign data in real time, identifying the drivers of performance variation across segments, campaigns and time periods without requiring manual interrogation of the data.