Outbounding and phonenumbers

I wouldn't give phone numbers in outbound emails. I wouldn't give any info except the email,
and things related to domains.

Does adding phone numbers in the signature add any credibilty?

In that case would they really calll? I mean, people don't respond to emails, so
logically they won't call either.

So if they will find emails more credible but won't call, then it makes sense to add
a public sms number.

Outbounding and phonenumbers