Is SMTP of G - Suite good for sending bulk invoices

I have developed code for sending bulk invoices to the customer but some times emails wont go
to the customer and display this error uipath smtp a connection attempt failed because the connected party did not respond after a period. Will this problem be solved by buying SMTP Server

hi! take a look at

@rpa5, mh dont you wanna just handle this error with a retry mechanism? since its a known error, you can check if it occurs you kill all processes and try again, you can even delay it for sometime before trying again. maybe just kill all processes wait for 10 minutes and try again.