I am sending form results via smtp/php mail using gmail’s servers. Is there a daily limit on how many results can be sent? Again, I’m not sending bulk email or anything, however, there’s a chance thousands of people will use this form over the course of a week and I need a sure fire way to get these results to the users’ emails.
I’ve tested a number of methods and only ran into problems with getting emails through to Gmail accounts- they wouldn’t even appear in the spam folder (and sometimes they did). Using smtp.gmail.com worked without a hitch.
So is there a limit for sending results from forms via Gmail and if so, is there a way to purchase more? All I’m seeing are results for sending mass messages to multiple recipients, which is not the case in this situation. It’s only needed for about a week.
Gmail does have hard sending limits. For Google Apps accounts it’s 2000/day with smaller burst limits as well (http://support.google.com/a/bin/answer.py?hl=en&answer=166852).
They do not publish the regular Gmail limits, but anecdotally it’s around 100/day from external clients (such as your app), 500/day from within the Gmail web client.
For sending to individual recipients you’re probably looking for a transactional email service – see here for more discussion: Looking for bulk and transactional email-sending service
Disclaimer: I work for PostageApp, mentioned in the attached SO discussion