The only mailing list Gymcatch operates is for our Business Account customers to keep them up-to-date with new features and enhancements. Each communication has an unsubscribe option on the email.
For any other correspondence from Gymcatch, this will not be from a subscribed mailing list but most likely an automated notification generated from a fitness business you have a relationship with on Gymcatch.
You can control your notifications by logging into Gymcatch and going to your profile.
From the iOS and Android app you then select Settings, Notifications, turn on/off as required.
On the web you just select the NOTIFICATIONS header from within your profile and turn them on/off as appropriate.
If this does not fit your understanding please forward us the email in question to firstname.lastname@example.org and we will review and revert.