Delay between two emails when sending
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I want to insert a delay between two emails set with internal php mailer, I want to delay .5 seconds: php: sleep(.5);
where can I insert that?I sent 3000 mails with thunderbird mail merge for 5 times so far. Never had problems sending, but now problems with this plugin, only 25% reach the receivers, when sending 500 emails every 10 minutes, I know it because of autoresponder emails that I counted. Sending only 100 emails every 10 min is much better. Thunderbird is slow, always places a copy into sent folder. So makes automatically a pause of about .5 seconds. So I want to insert a pause of .5 seconds after each mail that was sent, I want to simulate the successful sending with thunderbird “mail merge” addon.
I have PRO license. Please tell me where I can insert that “sleep”.
tia
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