I have many easy questions about business email
Hi, I have some questions when I write emails in English for work as shown below. Please advise.

1. Can I say “suggested” as an adjective?
A) We are okay with your suggested schedule.
B) The suggested schedule was confirmed.

2. As far as I know, “If yes,” is not correct, but it should be “If so,” and “If not or if no,” should be “Otherwise”. Am I correct?
Ex) (If yes / If no / If not), please send the material tomorrow. (I think this is wrong.)
(If so / Otherwise), please send the material tomorrow. (I think this is right.)

3. Are these sentences correct?
Ex) The test is scheduled on 3/5.
Ex) The test is planned on 3/5.

4. As far as I know, if I want to use a verb after “help”, I cannot use “to”, am I correct?
Ex) Please help me to receive your feedback today. (I think this is wrong.)
Ex) Please help me receive your feedback today. (I think this is right.)

5. Please let me know which sentences are correct and incorrect.
A) I will send you the material tomorrow.
B) I will send the material to you tomorrow.

6. Can I use “improve” in this context?
Ex) We will change the material to improve the current material issue.
(I’m worried if I say “improve” in this context, it sounds make the issue worse.)

7. Please let me know which sentences are correct and incorrect.
A) Please let me know if there is any update.
B) Please let me know if there, is any updates.
C) Please let me know if there are any update.
D) Please let me know if there are any updates.

8. I know “Well noted.” Is common sentence and correct. Can I say these?
A) Well noted about the information.
B) Noted about the information.
C) Well received.
D) Well received the files.

9. Please let me know which sentences are correct and incorrect.
A) This is Jay. It is nice to contact you.
B) This is Jay. It is nice to contact with you.
C) This is Jay. It is nice to talk with you.
D) This is Jay. It is nice to talk to you.

10. Is there any phrase “visible schedule” in English?
Ex) I am not sure if you already have more visible schedule for this agenda, but we want to have a meeting on 3/5.
(When I say “visible schedule”, I mean I want to know if you receive any updated schedule or the schedule is confirmed.)

11. Please let me know which sentences are correct and incorrect.
A) There is wrinkle in heel area.
B) There are wrinkles in heel area.
C) There is a wrinkle issue in heel area.
D) There is wrinkle issue in heel area.
E) There is a severe wrinkle in heel area.
F) There are severe wrinkle

Question

I have many easy questions about business email
Hi, I have some questions when I write emails in English for work as shown below. Please advise.

1.  Can I say “suggested” as an adjective?
A) We are okay with your suggested schedule.
B) The suggested schedule was confirmed.

2. As far as I know, “If yes,” is not correct, but it should be “If so,” and “If not or if no,” should be “Otherwise”. Am I correct?
Ex) (If yes / If no / If not), please send the material tomorrow. (I think this is wrong.)
   (If so / Otherwise), please send the material tomorrow. (I think this is right.)

3. Are these sentences correct?
Ex) The test is scheduled on 3/5.
Ex) The test is planned on 3/5.
  
4. As far as I know, if I want to use a verb after “help”, I cannot use “to”, am I correct?
Ex) Please help me to receive your feedback today. (I think this is wrong.)
Ex) Please help me receive your feedback today. (I think this is right.)

5. Please let me know which sentences are correct and incorrect.
A) I will send you the material tomorrow.
B) I will send the material to you tomorrow.

6. Can I use “improve” in this context?
Ex) We will change the material to improve the current material issue.
   (I’m worried if I say “improve” in this context, it sounds make the issue worse.)

7. Please let me know which sentences are correct and incorrect.
A) Please let me know if there is any update.
B) Please let me know if there, is any updates.
C) Please let me know if there are any update.
D) Please let me know if there are any updates.

8. I know “Well noted.” Is common sentence and correct. Can I say these?
A) Well noted about the information.
B) Noted about the information.
C) Well received.
D) Well received the files.

9. Please let me know which sentences are correct and incorrect.
A) This is Jay. It is nice to contact you.
B) This is Jay. It is nice to contact with you.
C) This is Jay. It is nice to talk with you.
D) This is Jay. It is nice to talk to you.

10. Is there any phrase “visible schedule” in English?
Ex) I am not sure if you already have more visible schedule for this agenda, but we want to have a meeting on 3/5. 
(When I say “visible schedule”, I mean I want to know if you receive any updated schedule or the schedule is confirmed.)

11. Please let me know which sentences are correct and incorrect.
A) There is wrinkle in heel area.
B) There are wrinkles in heel area.
C) There is a wrinkle issue in heel area.
D) There is wrinkle issue in heel area.
E) There is a severe wrinkle in heel area.
F) There are severe wrinkle

Answer

11. Please let me know which sentences are correct and incorrect.
A) There is wrinkle in heel area. SAY INSTEAD There is a wrinkle in the heel area. 
B) There are wrinkles in heel area. SAY INSTEAD There are wrinkles in the heel area. 
C) There is a wrinkle issue in heel area. SAY INSTEAD There is a wrinkle issue in the heel area. 
D) There is wrinkle issue in heel area. SAY INSTEAD There is a wrinkle issue in the heel area.
E) There is a severe wrinkle in heel area. SAY INSTEAD There is a severe wrinkle in the heel area.
F) There are severe wrinkle SAY INSTEAD There are severe wrinkles.

Answer

6. Can I use “improve” in this context?
ANSWER: Good Question. Hmmm... I think I would say alleviate instead of improve. 
Ex) We will change the material to improve the current material issue.
   (I’m worried if I say “improve” in this context, it sounds make the issue worse.)

7. Please let me know which sentences are correct and incorrect.
ANSWER: D is the only right answer. 
A) Please let me know if there is any update.
B) Please let me know if there, is any updates.
C) Please let me know if there are any update.
D) Please let me know if there are any updates.

8. I know “Well noted.” Is common sentence and correct. Can I say these?
ANSWER: Personally, I would only use D but I would change it a little to say The files were well received. 
A) Well noted about the information.
B) Noted about the information.
C) Well received.
D) Well received the files.

9. Please let me know which sentences are correct and incorrect.
ANSWER: A and B sound very strange to me. B is not right at all. C is almost right. Say instead "This is Jay. It is nice talking with you. D is correct. 
A) This is Jay. It is nice to contact you.
B) This is Jay. It is nice to contact with you.
C) This is Jay. It is nice to talk with you.
D) This is Jay. It is nice to talk to you.

10. Is there any phrase “visible schedule” in English?
ANSWER: I don't know this phrase. I like the words you used later on "updated schedule" or "confirmed schedule"
Ex) I am not sure if you already have more visible schedule for this agenda, but we want to have a meeting on 3/5. 
(When I say “visible schedule”, I mean I want to know if you receive any updated schedule or the schedule is confirmed.)

Answer

1.  Can I say “suggested” as an adjective?  
ANSWER: Both A and B are good. 
A) We are okay with your suggested schedule.
B) The suggested schedule was confirmed.

2. As far as I know, “If yes,” is not correct, but it should be “If so,” and “If not or if no,” should be “Otherwise”. Am I correct? 
ANSWER: If yes, please send the material. If not, please send the material. If so, please send the material. Otherwise, please send the material. (All those are good--don't use If no)
Ex) (If yes / If no / If not), please send the material tomorrow. (I think this is wrong.)
   (If so / Otherwise), please send the material tomorrow. (I think this is right.)

3. Are these sentences correct?
ANSWER: The test is scheduled on 3/5 is good. When I see 3/5 I see March 5th (American dates)
Ex) The test is scheduled on 3/5.
Ex) The test is planned on 3/5.
  
4. As far as I know, if I want to use a verb after “help”, I cannot use “to”, am I correct?
ANSWER: Both these sentences sound awkward to me. I would say "I would like to receive your feedback today please."
Ex) Please help me to receive your feedback today. (I think this is wrong.)
Ex) Please help me receive your feedback today. (I think this is right.)

5. Please let me know which sentences are correct and incorrect.
ANSWER: Both are correct, but I would use option A if I was writing the sentences. 
A) I will send you the material tomorrow.
B) I will send the material to you tomorrow.

Answer

11. Please let me know which sentences are correct and incorrect.
A) There is wrinkle in the heel area. ok "the" added
B) There are wrinkles in the heel area. ok "the" added
C) There is a wrinkle issue in the heel area. ok "the" added
D) There is wrinkle issue in heel area. -nope 
E) There is a severe wrinkle in the heel area. ok "the" added
F) There are severe wrinkles "s" added
F) There is a severe wrinkle.

Enjoy.
Maybe "answers" is not the best are for correction?

Answer

7. Please let me know which sentences are correct and incorrect.
A) Please let me know if there is any update. - This technically means "yes" or "no" when it happens. But used for "tell me" too. Also look up "whether". "whether there is an update" ==> yes or no, now.
B) Please let me know if there, is any updates. - nope. NOt like this.
C) Please let me know if there are any updates. are any updates - plural - see first anser above 
D) Please let me know if there are any updates. -oh, ok, yes this one.

8. I know “Well noted.” Is common sentence and correct. Can I say these?
A) Well noted about the information. - yes
B) Noted, about the information. - yes, I'd comma after "noted"
C) Well received. - yes, but not the same meaning. It usually means, accepted with pleasure, made someone happy.
D) Well received the files. - nope. See above.
The files were well received = the file were good, made us pleased, they were liked.
I hope this answer is well received.

9. Please let me know which sentences are correct and incorrect.
A) This is Jay. It is nice to contact you. - Not incorrect, "contact" unusal to be used this way.
nice to make contact with you. - "nice" is ok, but old and over-used.
B) This is Jay. It is nice to contact with you. - nope, see above example
C) This is Jay. It is nice to talk with you. - yes
D) This is Jay. It is nice to talk to you. - yes

10. Is there any phrase “visible schedule” in English?
Nope. No clear idea of the meaning.
(When I say “visible schedule”, I mean I want to know if you receive any updated schedule or the schedule is confirmed.)
These words are better.
public/shared updated schedule?
public/shared  schedule update?