I own a custom domains account and one of my domains (unicefoncampuslincoln.co.uk) is giving me issues. We are a university society for the UNICEF International charity. We hold fundraising events in the city of Lincoln. We have a mailing list of 264 people (at the time of writing). We use a custom coded software to send out emails regarding our event announcements (usually 2 emails per week). All of the people in this list OPTED IN to receiving mail.

However, our accounts are restricted to 100 emails per day, meaning we have to send 100 from the first account, 100 from another and 64 from another. This is only the case if the accounts in question havent already been replying to mail that day, if they've already been replying to regular email then we sometimes have to use 4 accounts. Sometimes when sending these mails, outlook see's "suspicious activity", even though the emails are being sent form the same IP they usually are, and locks the account. This is rather annoying because it causes our software to spit dozens of 251 or 250 errors back, and requires us to login to the account on a browser and re-activate it, to the continue to send emails.

Is there any way we can have the limit increased? 100 emails is not very many at all. Also given that the emails are sent to the same group of accounts (albeit some are added every time) I would have thought the system would realise.

Thanks

Tom