I did 3 sessions of MDMA therapy with a therapist in the underground community in Santa Cruz in the 90's, which later became the Multidisciplinary Association for Psychedelic Studies (MAPS) https://maps.org/ who now work with veterans with PTSD. I had experience with psychedelics, but none with MDMA. All I can say is ymmv. I was underwhelmed by the experience. Later I would go on to do CBT, DBT and Wisemind, and CPT [1] for PTSD and those actually worked really well. I think MDMA combined with those therapies might have been even better. CPT was particularly helpful to confront the abuse I suffered.