[PLUG] Automating mailings at intervals of 1 hour

[Robert Citek]

On Thu, Feb 11, 2016 at 7:18 PM, Galen Seitz <galens at seitzassoc.com> wrote:
> On 02/11/16 16:10, Rich Shepard wrote:
>>    I have several hundred newsletter subscribers and, because my outbound
>> mail needs to be relayed via my ISP's mail server there's a limit of 100
>> messages/hour per IP address.
>>
>>    To accommodate this limit I've partitioned the address list in chunks of
>> 100 addresses each and done the same with the mailx scripts (which requires
>> me to edit the subject line for each script). What I'd like is to have a
>> wrapper script that would be fed to 'at' and 1) enter the newsletter e-mail
>> subject line on each mailx script and 2) send subsequent chunks at hourly
>> intervals. Cron is not appropriate because newsletters are written and
>> distributed irregularly.
>>
>>    A pointer to what I should read to learn how to accomplish this is what I
>> need.
>
> You're running Postfix, correct?  Why not let Postfix handle this?

Or let SendGrid handle it:

https://sendgrid.com/

If you send less than 12,000 emails per month, they have a free plan:

https://sendgrid.com/pricing

Good luck and let us know which route you take and how things go.

Regards,
- Robert