Problem with email to multiple addresses

photodgm

I co-ordinate a number of different groups of people which requires me to send an email to multiple addresses (up to 20).
It seems that some of these emails are not being received by some people (not always the same people, although some get all the emails). If I send out individual emails they all get delivered. I use Windows 7 and Windows live mail, the email address I use for this is the one linked to my ISP Plusnet. There are no error messages and no emails are bounced back. Plusnet can only suggest using Webmail. This has only started to happen in the last few months. Does anyone have an idea of what is happening and how I can fix the problem?
Thanks.

poppy10_2

Have you asked the recipients if they have checked their junkmail/spam folder?

gjchester

photodgm wrote: »

. Does anyone have an idea of what is happening and how I can fix the problem?
Thanks.

No errors and no bounce backs suggests they are being Spam Filtered.


You need to get everyone you send emails to, to check their spam filers (both in the software they use and also on the WebMail side) and add you to their safe sender lists.


Its also possible that someone using your ISP is spamming a lot (be it deliberately or because they have a malware infection) and your ISP may be blacklisted, but getting that fixed will be a lot harder.

photodgm

poppy10 wrote: »

Have you asked the recipients if they have checked their junkmail/spam folder?

Yes - it only happens when I send to multiple addresses - if I send the email to everyone individually there doesn't seem to be a problem.

Fightsback

Spam filters will consider a high number of recipients to likely be a spam email.

photodgm

gjchester wrote: »

No errors and no bounce backs suggests they are being Spam Filtered.

I agree some form of filtering could be the issue, but I don't understand why this only seems to be a problem when I send to multiple addresses - I don't fully understand the technicalities of email so I'm not sure where such filtering could take place.

photodgm

Fightsback wrote: »

Spam filters will consider a high number of recipients to likely be a spam email.

So can a local computer 'look' at an incoming email, decide that it has too many recipients and then decide it is spam?
If so is this a feature of the email client being used, local anti-virus software or could it be instituted by the recipient's ISP (in which case the recipient may not see it in their spam/junk folder)?

agrinnall

Have you tried making all the recipients BCCs? That might defeat a check of the number of recipients if that is the problem.

photodgm

agrinnall wrote: »

Have you tried making all the recipients BCCs? That might defeat a check of the number of recipients if that is the problem.

That's a thought, thanks.

chunter

Also good manners to use BCC rather than CC as you're broadcasting everyone's (possibly private) email address to lots of people.

Cycrow

photodgm wrote: »

So can a local computer 'look' at an incoming email, decide that it has too many recipients and then decide it is spam?
If so is this a feature of the email client being used, local anti-virus software or could it be instituted by the recipient's ISP (in which case the recipient may not see it in their spam/junk folder)?

Some clients do have spam filters built in, which will filter mails that it receives, some use their own junk folder for these, others may just get rid of them.

the filtering can also happen on the server itself, again this can put them into a spam/junk folder or just not delivery them, or even reject them completely.

span filters generally work on a points system, so each item is given a number of points and if they go over the threshold they are marked as spam.