You can send a text message to an email address. If your phone can send pictures to another phone, you can send the pictures to your email address. Just type the email address in where the phone number goes in your text application’s “to” field.
Which is fine, BUT: I upgraded my phone and the old one has the photos of Sionnsar on it. It is useless except as a reference because the phone number is still the same...it hasn’t changed in four years. If the numbers were different, I could send the photos.
So I am still faced with trying to get the photos off the old phone and either onto the new, or onto the ‘net.