Email send limit


Does anybody knows how many emails a user can send by hour or day?
I need to setup a list manager (phplist) and have aprox. 600 members registered in the newsletter.


IIRC, the limit is wither 100 or 200 per hour, per machine user, depending upon how the mail is sent. Support can confirm for sure, so I would ask them. :wink:

100 recipients / hour

If you need more than the existing limit, you can send a ticket to Dreamhost. As long as you abide by their spam policies (, I believe they will up the limit.

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they wont increase your quota just because u ask.
they tell u to use their very own mailinglist manager, on panel

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Correct. I would use their mailing list as it does not have a set limit as long as it is being used for legal (non-spam) purposes.

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I once asked if it was possible to up it, and they seemed to be okay with it, so long as I met their strict anti-spam criteria. I didn’t look much further into the matter, but it definitely seemed like it was doable. The best thing to do would be to ask them:

P.S. this is the email they sent me:

We have recently initiated an anti spam trap of 200 emails per hour via
shell/php/ror due to high levels of spam and phishing coming from our

If you plan to use this account for bulk email purposes, we will first
need to ascertain that your usage is consistent with our anti- spam
policy, which you can review here:

The most important aspects of this policy, which we would like you to
address, are:

  1. Whether or not you have used an opt-in confirmation process (not to
    be confused with regular ‘opt-in’) for all of your your list’s
    subscribers. This is a process wherein each person who signs up for your
    list is sent an email after subscribing with a tagged link in it that
    they must click on before being added to the list. Those who do not
    click on the link are not added, and receive no further bulk email.

  2. Whether you log each confirmation with the date/time and IP address
    associated with that confirmation.

  3. Where we may go to independently review your opt-in confirmation
    logging data.

Also, we would like to know where we may sign up for your mailing list
in order to test out its opt-in confirmation functionality.

If your bulk email usage is not in compliance with these policies, we
must ask that you cease any bulk email activity immediately until you
have become compliant. The easiest way to do that is to use our
Announcement list feature, which you can access here:

The Announcement list feature handles the opt-in confirmation and
logging aspects of the policy for you, so that you don’t have to.


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That wasnt what I was told by support when I asked if it was possible to setup an email every 5 sec, running around 700 per hour to use with my PHPlist.

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I would hope after they confirm your list to be within their anti-spam policy, they will up the limit to the amount of subscribers you have.

there is no limit to the number of subscribers, as far as I know.
Nor it can’t there be, on a third party software like PHPlist.
The only limit imposed by DH, or any other ISP, is the number of emails that your account is allowed to send.

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as mention on the PM, here is the partial content of my config file:

If you set up your system to send the message automatically, you can set this value

to 0, so “Process Queue” will disappear from the site

this will also stop users from loading the page on the web frontend, so you will

have to make sure that you run the queue from the commandline

check README.commandline how to do this


define the amount of emails you want to send per period. If 0, batch processing

is disabled and messages are sent out as fast as possible


define the length of one batch processing period, in seconds (3600 is an hour)


to avoid overloading the server that sends your email, you can add a little delay

between messages that will spread the load of sending

you will need to find a good value for your own server

value is in seconds (or you can play with the autothrottle below)


Mailqueue autothrottle. This will try to automatically change the delay

between messages to make sure that the MAILQUEUE_BATCH_SIZE (above) is spread evently over

MAILQUEUE_BATCH_PERIOD, instead of firing the Batch in the first few minutes of the period

and then waiting for the next period. This only works with mailqueue_throttle off

it still needs tweaking, so send your feedback to if you find

any issues with it


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