Issues with searching for specific phrases within a column in R [First Question Ever] [duplicate]

I hope everyone is doing well. I would like to preface this post by pointing out that I am very new to using R, and entirely new to the Stack Overflow community here.

I will try to follow the guidelines for posting to the best of my ability, and I apologize in advance if my question is unclear in any way.

I recently collected survey data pertaining to the recruitment trends for student-led organizations at my business school. I have collected this data using a google form, which I then exported to a CSV file and read into R.

---

One particular column of data "Application.Awareness" shows student responses for how they became aware of recruitment events. Responses include character strings such as "Word of Mouth" , "Email", and "Social Media".

Students may select more than one option when answering, so many of my rows look like:

Word of Mouth, Social Media

Social Media, Email, Word of Mouth

Word of Mouth

Social Media, Email

Email

---

My Issue

I want to create separate columns for Social Media, Word of Mouth, and Email, so that I can easily measure and compare the popularity of these three options.

To do so, I have tried to utilize the IfElse arugment, which I thought would mark rows that contain "Email" with a "1".

MyData$App.Awareness.Email <- ifelse(MyData$Application.Awareness == "Email",1,0)

However, this code only works for rows of data which ONLY contain the response "Email". For example, a response containing "Email, Social Media" will result in a "0" in the new column.

My Question

Based on the problem above, is there a way to pull the observations that contain the word "Email", even if there are other words/phrases in the same row?

I hope I am articulating this well, please let me know if you need me to explain further. Thank you to anyone who has taken the time to read this!