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Asked: 2026-05-11T15:52:22+00:00

When a user completes an order at my online store, he gets an email

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When a user completes an order at my online store, he gets an email confirmation.

Currently we’re sending this email via Gmail (which we chose over sendmail for greater portability) after we authorize the user’s credit card and before we show him a confirmation message (i.e., synchronously).

It’s working fine in development, but I’m wondering if this will cause a problem in production. Will it require making the user wait too long? Will many simultaneous Gmail connections get us in trouble? Any other general caveats?

If sending the emails synchronously will be a problem, could someone recommend an asynchronous solution (is ar_mailer any good?)

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1 Answer

  1. The main issue I can think of is that Gmail limits the amount of email you can send daily, so if you get too many orders a day it might break.

    As they say :

    ‘In an effort to fight spam and prevent abuse, Google will temporarily disable your account if you send a message to more than 500 recipients or if you send a large number of undeliverable messages. If you use a POP or IMAP client (Microsoft Outlook or Apple Mail, e.g.), you may only send a message to 100 people at a time. Your account should be re-enabled within 24 hours. ‘

    http://mail.google.com/support/bin/answer.py?hl=en&answer=22839

    I would recommend using sendmail on your server in order to have greater control over what’s going on and don’t depend on another service, especially when sendmail is not really complicated to set up.

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