WS Form claims email is sent but it’s not

Hello,

I’ve been using this link for help on setting up an automatic email to be sent to myself when someone submits the form: https://wsform.com/knowledgebase/send-email/

I submitted the form 4 times to see if I would receive an email, but I haven’t received it once. WS Form says an email was sent each time, but it’s not true. I know the link recommends I also download Amazon SES, Mailgun, or SendGrid, but surely I can send/receive emails without this?

Thank you for the help!