I run a small business from home, and send a regular newsletter. I have a TalkTalk phone and broadband package. I now find that I am unable to send more than about 20 newsletters in a block. Annie Hall
I can't find any mention of this on the TalkTalk website, but internet service providers usually limit the number of emails you can send at once, to discourage spamming. However, I'd have thought 100 was a more reasonable number than 20. You could try contacting TalkTalk for help, but ISP email services are not a selling point but an overhead that I suspect most would rather be rid of. Larger companies, including the Guardian, often use outside services such as cheetahmail.com and jangomail.com to send out promotional emails. You could try a local supplier such as Subscribed: there must be lots. These companies tend to be hostile towards anything "spammy" as it could affect their business.