Finally after my third attempt my docs were accepted.
Here's exactly what I did.
1) I had the sealed envelope containing the marksheets.
2) The envelope contained 7 individual semester marksheets out of 8, consolidated marksheet with 8 tables containing grades and CGPAs of all semesters and a copy of the back side of the consolidated marksheet, which basically explains why there are only 7 individual semester marksheets. (because after 8th semester we are given the consolidated marksheet which supersedes all previously given marksheets).
3) So total 9 papers inside the envelope. 7 individual marksheets, 1 consolidated marksheet and 1 explaining why 8th sem individual marksheet is not there.
4) All 9 were black and white xerox copies, NOT ORIGINALS. Each copy was attested and signed by Registrar.
5) I'm pretty sure individual semester marksheets are not required but i sent them anyway. If ur college doesn't give them its ok i think.
6) Envelope had the college logo and address in the front.
7) Envelope was sealed at the back with the stamp on the back flap.
8) My college is not on the autonomous list. They conduct their own exams.
7) My college is somewhere else and I live work in a different city. I didn't want to go all the way to college again to post docs to WES. So I just walked to a DTDC shop near my house.
8) DTDC guy gave 2 options : 2200/- (they only deliver it, 6 business days) and 2700/- (tie up with DHL, 3 business days)
9) I went with 2700/- option. My docs reached within 3 business days.
10) Don't put ur sealed envelope in any other courier's own envelope.
11) DTDC staples the shipping label (a paper with package details in it) to the envelope.
12) In the shipping label i wrote sender address exactly as "Registrar, Address of my college".
13) I was asked to sign on the shipping label. I found out the name of the Registrar and just signed as him and sent.
14) I had already sent my degree certificate so didn't include it this time.
This is it. Follow this and I don't see why ur docs will get rejected.
JNTU students, ANNA University students regularly do this as their colleges don't send docs.
Make sure u don't break the envelope seal. Don't tamper with envelope.
Don't put the sealed envelope in an other envelope.
Don't mention any personal details on the envelope or the shipping label and ull be fine.
I'm waiting for my evaluation report now. Will take 20 more days.
All the best!