Cannot send but can receive email

I noticed yesterday 3/30/2020 that my email is not being sent even though it shows up in the sent file.

I can receive email with no problems. This happens through webmail on my laptop and mac and also on my iphone. I checked my iphone settings and they are correct which doesn't explain why I cannot send through webmail. 

And my mail does not end up in spam (testing with my gmail account and my husband's email)

Help!