When does the Mail API per-process limit of 200 emails come into play with my customization(s)?
Connect for PHP (CPHP) API
The 200 email recipient limitation described in the CPHP technical documentation is on a per-process basis. If you use CPHP exception handling in your code you should see this indicated in the API response exception when the API call fails. Regardless of the source of problem(s) encountered with the API, the use of proper exception handling within the code should determine the source of the problem. For further details please see
Answer ID 9640: Connect for PHP Best Practices and Gotchas
In terms of the limitation being per-process - this can come into play only if the script sending emails is sending to a total of over 200 recipients (including to and cc addresses) or if a single process is calling a script (or multiple scripts) multiple times and the resulting addition of all email recipients is over 200. For example, this can come into play with asynchronous CPM customizations, because asynchronous CPM scripts are called by a utility process that runs multiple queued 'script runs'.
That said, the mail API is intended more for emailing from scripts in situations where there is an error and we want to notify someone to take a look. The product rather provides functionality called 'Message Templates' that is intended to be used to send emails to service contacts. For further details please see