Hi @Sparx28 you could try uninstalling and downloading again. However there have been reports of issues with outlook/Hotmail accounts. so if still issues in the event of 2 step verification being enabled you may need to create an app specific password in the email app. If the IMAC protocol was disabled log into a web browser to enable this function. Otherwise would need to contact the email provider. Some further information in this thread https://eu.community.samsung.com/t5/galaxy-s22-series/email-won-t-send/
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .
@Sparx28: If your problem persists, please can you confirm which app you are using to access your emails e.g. Samsung Email, Outlook etc? Furthermore, please confirm the model number and current Android version of the device you're using, located in Settings > About phone (or About tablet).