Yes, form CT-1041 can be e-filed.
In case you do need them, here are the CT 1041 mailing addresses.
For all CT-1041 tax forms with or without payment enclosed:
Department of Revenue Services
PO Box 2934
Hartford, CT 06104-2934
For payments without tax forms:
Department of Revenue Services
PO Box 5088
Hartford, CT 06102-5088
For more information about form CT-1041, follow this link:
https://portal.ct.gov/-/media/DRS/Forms/1-2018/Fiduciary/CT-1041-Booklet_1218.pdf?la=en