No Comma on Keyboard iPhone

Tried writing two email addresses side by side in the TO field and ... to my surprise, there is absolutely no Comma on the keyboard to separate them with. Is this correct? Seriously?
The preliminary keyboard with letters has no comma.
Clicking the 123 button reveals numbers and periods (in fact two periods!) but no comma ...
w t f ?
How do I separate two email addresses side by side in the TO field?
I tried putting a space between them but it just combined them into one long email address....
VAIO