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Email attachments & data usage

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when I forward an email with attachments without downloading the attachment, are the bytes of the attachments added in my data usage?

16 replies

by derek schauland

When you receive an email with an attachment, the attachment is taking up storage space because it is attached to the message.

The same is true of forwarded mail, since a forwarded message is stored separately and the attachment with it, this too will consume storage space unless you can configure a single instance storage setup on your mail server, allowing messages and attachments to be stored once and referenced.

by darryl~

allowing messages and attachments to be stored once and referenced.

That's interesting. I don't think I've come across that before...have you set one up? Is it specific to certian mail servers? Could you suggest a site where I can read up on that a bit....I normally only deal with GroupWise & Exchange...I can see where that would save me a lot of space.

by derek schauland

I have not had the opportunity (or more accurately the time) to setup Single Instance Storage in Exchange.

You might start with this post: http://msexchangeteam.com/archive/2008/02/08/448095.aspx

hope this helps. I would be interested in your findings and how this works out for you, if you go down this path... feel free to start another discussion or email me directly.

by somnath laha

Thanks Derek for the answer.
Can you tell me where in my stoage media do the email attachments get downloaded even if i do not download the attachment myself

by deadly ernest

If it's a web mail service like Gmail then it won't. If it's a normal mail client like Thunderbird or Outlook Express, then it will as your system will have actually downloaded the attachment to your system already, and it will need to add it to the forward to send it out again.

The only thing is you haven't opened it to view it yet.

If from a web mail service like Gmail it won't download until you tell it to download and open.

by older mycroft

If the user has online email (like me) and is using Gmail (like me) than there's zilch to worry about.

Sometimes I wonder why ([i]gonna get shouted at now by the Big Guns!![/i]) more companies don't use a secure online webmail service.

[i]I can hear the sliders and the hammers already!![/i] ;)

Edited for compositor error.

by deadly ernest

reasons:

1. Easier corporate control of the whole bundle.

2. Security of back up copies and ensuring their access.

3. In some cases legal concerns.

by tintoman

Clearly he is on a limited download allowance and wants to know if forwarding email attachments costs him from his allowance.
The fact that he says he hasn't "downloaded" the attachment is immaterial snce even if he uses webmail he would have to download the data from the attachment in order to see it would he not? therefore that part of the operation certainly does come off the download limit.
It would be foolhardy of anyone to forward an attachmnet without knowing what it was so my answer yes it does cost download allowance

by deadly ernest

But here it is again.

When you use a web mail system like gmail, the web page shows the email and that it has an attachment. that attachment is still sitting on the gmail server and does not get transferred to your system until you tell it to download to you. If you then froward that on it gets sent from the gmail server, and has no further effect on your download stats.

If it is through a pop mail server such as the ISP one or your own, unless you've set up some unusual rules the attachment has been downloaded to your system with the email itself, you just have to open it to view it. If you then forward it on from your email client (such as Outlook Express, Thunderbird etc.), then it adds to your download as you now need to send it back out on the internet via the smtp mail server.

It all has to do with where the email is sitting when you look at it, out on the web (ie cloud technology) or on your home system.

I can think of a few situations where you would forward an attachment sight unseen. One, it goes to an email account you don't want to store it on, so you bounce it off to another and delete it from the first. Another is you expect an attachment from someone to send to a third party and you may just bounce it on when it comes in.

by tintoman

I am saying that if he opens the attachment from its server location ie via webmail he is still downloading data over his internet service to view that attachment and therefore there is a data usage cost involved

by derek schauland

Without knowing the environment he is using, webmail, exchange, etc it is a bit hard to accurately answer the question.

My comment above was assuming perhaps that exchange was in use. I was hoping I might get the asker to return and fill in some of the holes...

by deadly ernest

and that's a no download from a web mail account. the other aspect I'm surprised he's not asked is if he forwards on to more than one person.

as long as the forward is done to them all in the one email with multiple recipients, it's only the one transmission, but separate forwards means a new email each time. A lot of people don't realise this one either. So a single forward to three addresses is one upload if via smtp and the isp mail server, or three uploads if each is a separate email.

by somnath laha

thank you all again for your replies.
I have got the answer to my question from the replies.
I was actually speaking about webmail services
I have one more doubt that just opening the attachmenet from webmail services like gmail & yahoo, without downloading it (by clicking on download) downloads the attachment.
i think it does so and the attachment is downloaded in 'Temp'. What happens after I close the file?

by tintoman

that now that i have looked again at my own response I can see how you might have thought that I was undermining your answer, which I certainly was not, I have nothing but respect for those who provide this free advice service and I hope you were not offended by me, if you were I apologise

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