The aim of the article is to evaluate the level of customer relationship management (CRM) focused on communication with customers within the CRM architecture in SMEs in the Czech Republic. To achieve the aim of the article, primary research was carried out using a questionnaire survey. The whole respondent sample consisted of 1 446 respondents. The subject of the research was communication activities in the strategic, operational and collaborative part of CRM. To evaluate the level of activities, a modified method of the Deming cycle was used, extended by the authors to the phase of nonimplementation of activities. A research question and hypotheses were formulated. The mode of repondents´ responses occurred most often in the lowest phase of implementation with the exception of setting the rules of communication with customers and the functioning of the ordering system, which were in the highest quality phase and the absence of a center of interaction. The verification of hypotheses confirmed the relationship between the size of SMEs and the examined activities related to communication with customers.