<p dir="ltr">Mentorship between faculty members and graduate students is critical for students’ success, especially when it includes career and psychosocial support (Byars-Winston & Lund Dahlberg, 2019; Crisp & Cruz, 2009; Paglis et al., 2006). When mentors offer both types of support, mentees benefit in professional and personal ways (Gardiner et al., 2007; Johnson, 2007). Mentoring occurs through the communication messages that mentors transmit to mentees, but research on mentoring has failed to explore faculty mentor messages (Buell, 2004).</p><p dir="ltr">This study aimed to analyze mentor messages from the perspective of Latino graduate alumni from Science, Technology, Engineering, Mathematics, and Medicine (STEMM) programs, a continuously growing group in graduate programs (Solinas-Saunders et al., 2023). To study these messages, this study utilized the theory of memorable messages (ToMM) (Cooke-Jackson & Rubinsky, 2022; Knapp et al., 1981). This study aimed to not only identify what memorable messages mentors communicate to students but also the potential impacts of these messages. This study was also concerned with identifying whether mentor memorable messages also support students’ development of resilience. According to the communication theory of resilience (CTR), resilience may be supported through five communication processes (Buzzanell, 2010).</p><p dir="ltr">Thematic analysis of 40 semi-structured interviews with Latino alumni with degrees from various STEMM disciplines revealed four types of memorable messages, positive and negative, from primary faculty mentors. These messages ranged from short verbal messages to longer conversations and included non-verbal communication such as memorable behaviors. Participants recalled messages of invalidation and validation of their academic, interpersonal, and cultural identities. Messages of career and life advice were also recalled. Lastly, messages of mentor red flags were remembered and focused on three specific red flags: manipulative behaviors based on power, emotional manipulation, and unprofessional behaviors.</p><p dir="ltr">This study showed that negative messages were more easily recalled, nearly word for word, than positive messages, and the impact of these messages had a deep lasting effect on students’ sense of self-worth. Positive messages, however few, had the ability to counter negative messages even in mentoring relationships that were nearly completely negative. Regarding resilience, all five communication processes of resilience from CTR were exemplified in the data. The data showed that there were very few examples of negative messages that spurred resilience and that many participants learned from memorable messages to develop emotional resilience, particularly those in mostly negative mentoring relationships.</p><p dir="ltr">These findings expand existing mentoring literature by illustrating how faculty mentor messages can either facilitate or impede graduate students’ development in STEMM. They also support ToMM’s suggestion that memorable messages can be nonverbal and include behaviors. This data also extends how certain memorable messages may serve as a catalyst for developing emotional resilience. Finally, recommendations are offered for faculty for more intentional communication with graduate students that may result in supportive memorable messages.</p>