Ok, here I am telling you the colleges for B.Tech/BE through correspondence learning in India.

Some B.Tech/BE correspondence learning Colleges in India

Jain Vishva Bharati Institute,
Directorate of Distance Education, Shantiniketan,
Ground Floor 20, 8 Camac Street, Calcutta 700017.

Jawaharlal Nehru Technological University
B.Tech in Civil, Computer Science, Electrical & Electronics, Electronics and Communication and Mechanical Engineering
Address - Kukatpally, Hyderabad, Telangana 500085

Andhra University
B.E / B.Tech in Civil, Electrical, Electronics, Mechanical and Chemical Engineering branches
Address - Waltair Junction, CBM Compound,
Visakhapatnam, Andhra Pradesh 530003

Indira Gandhi National Open University (New Delhi-110068) - Vertically Integrated Engineering Programme and Advanced Diploma leading to B.Tech (Civil) - Branches: Construction Management, Water Resources Engineering

Rajasthan Vidyapeeth offers Bachelor programmes in (1) Chemical, (2) Civil, (3) Computer Science, (4) Electrical, (5) Electronics & Telecommunication and (6) Mechanical Engineering

Thapar University was offering Bachelor programmes in (1) Civil, (2) Computer Science, (3) Electrical and (4) Mechanical Engineering (But currently it is Discontinued)
Address - Bhadson Road, Patiala, Punjab 147004

Yashwantrao Chavan Maharashtra Open University offers B.Arch and B.Tech in Marine Engineering
Address - Dnyangangotri Near Gangapur Dam, Sawargaon, Maharashtra 422222