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Asynchronous patient portal messaging has become a central mode of ambulatory communication. Its volume is highly variable and increasingly burdensome for clinicians, nurses, medical assistants, and operational leaders. Clinics often respond to inbox surges only after workload has already accumulated. This reactive pattern can prolong response times, intensify staff stress, and reduce the reliability of patient communication workflows. The objective of this predictive model article is to describe a conceptual model for forecasting daily digital patient portal message volume. The model would use disease seasonality, appointment density, medication changes, prior communication behavior, and clinic workload trends as dynamic predictors. The proposed model would combine time-series forecasting with structured clinical and operational features. Gradient-boosted trees, temporal neural networks, or related forecasting architectures could be trained on historical message counts and time-varying predictor variables. Conceptually, the model would provide rolling forecasts of expected message volume for each clinic, day, or operational shift. Forecast intervals could support staffing decisions, workload balancing, and proactive patient communication before inbox pressure peaks. A predictive model for portal message volume could help ambulatory clinics manage digital communication more proactively. Such a system would be expected to improve operational preparedness, staff well-being, and patient responsiveness.

Asynchronous digital communication with patients has become a routine component of modern healthcare delivery. The rapid growth of patient portals, chatbots, and digital front-door tools has created opportunities for more responsive care, while also increasing communication workload for clinical teams. This systematic review examined artificial intelligence applications in digital patient communication from 2017 to 2026. The review focused on portal message triage, chatbot support, care navigation, automated response drafting, and patient engagement analytics. A PRISMA 2020-compliant review was conducted using structured searches of PubMed, Scopus, IEEE Xplore, and Web of Science. Records were screened by two reviewers, with data extracted on communication domain, AI approach, clinical setting, evaluation strategy, safety reporting, and implementation maturity. The literature was dominated by studies of chatbot support and portal message triage, with a growing body of work on large language model-enabled response drafting. Care navigation and patient engagement analytics were less frequently evaluated, and most studies emphasized technical performance, user satisfaction, or feasibility rather than health outcomes or workload reduction in real-world settings. AI for patient communication appears technically promising in isolated tasks, particularly message classification, chatbot interaction, and draft response generation. However, evidence remains limited regarding safe, equitable, and effective deployment across integrated communication workflows.