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Old 19 Apr 2017, 10:01 PM   #1
Bagnet
Junior Member
 
Join Date: Apr 2017
Posts: 3
Aliases Questions

Hi.

If I use a FastMail account for a domain I own I'll have two addresses right? For example:
123@fastmail.fm
123@mydomain.com
but how will the web interface look?
Will all mails be received in the same Inbox? If I create folders will they be shared by both addresses?

Thanks in advance.
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Old 19 Apr 2017, 11:13 PM   #2
equaeghe
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Join Date: Apr 2007
Posts: 17
Quote:
Originally Posted by Bagnet View Post
If I use a FastMail account for a domain I own I'll have two addresses right?
Yes.
Quote:
Originally Posted by Bagnet View Post
but how will the web interface look?
Unchanged.
Quote:
Originally Posted by Bagnet View Post
Will all mails be received in the same Inbox?
Yes, essentially, but you can redirect using identities and filtering.
Quote:
Originally Posted by Bagnet View Post
If I create folders will they be shared by both addresses?
Yes, but you can assign folders to identities, so that some will ‘belong’ to one email address and some to the other.
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Old 19 Apr 2017, 11:38 PM   #3
Bagnet
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Thanks @equaeghe
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Old 20 Apr 2017, 10:52 AM   #4
n5bb
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Join Date: May 2004
Location: Irving, Texas
Posts: 8,081
Arrow Alias features

Welcome to the EMD Forums! It's even better than that. Sorry this is so long, but for future reference...

If you have a current account type which supports using your own domains (Standard or Professional account), you can create at least 600 aliases at FastMail domains and your own domain. You can send and receive email at any of these aliases using your account, but you must use your single FastMail account address to log in. You can change the login address (which must be at a FastMail domain), by the way.

When creating FastMail domain aliases, you have a choice of many domains (including sent.com, mm.st, and some other short domain names). You can only use an alias which nobody else has reserved, with these limitations:
  • Length of 2 to 40 characters
  • Starting character: a-z
  • Other characters: a-z, 0-9, _ (underscore), and . (dot)
When creating your own domain aliases, you can use any username you want at your domain(s), with these limitations:
  • Length of 1 to 40 characters
  • Starting character: a-z, 0-9, or _ (underscore)
  • Other characters: a-z, 0-9, _ (underscore), and . (dot)
So you can use these very short email addresses as aliases to send or receive email at your FastMail account using your domain:
_@mydomain.com
b@mydomain.com
8@mydomain.com

The aliases described above must be defined in advance in the Settings>Aliases setup screen. Each of these aliases targets (is delivered to) your FastMail account by default, You can also target each alias to an external email account, even at another email service. FastMail also supports subdomain and plus+addresses, which allow you to create a new alias at any time. You can do this by moving the username to the right of the @, so using the examples above you could use anything@b.mydomain.com or news@8.mydomain.com or use a FastMail domain alias in a similar fashion.

Why would you want to use subdomain addressing? It allows you to better sort incoming email from businesses or other organizations where you sign up on their website and detect phishing. How does this work?
  • Let's say you want to keep all of your banking emails in a folder you name "Bank". But you want to be able to tell later which bank or credit card service sent a particular email to you.
  • First you create an alias at either your domain or any FastMail domain with an alias name of "bank" (capitalization is ignored for email addresses).
  • When you need to sign up for some financial service and give them a contact email address, you use servicename@bank.yourdomain.com (where servicename is anything you wish, but typically allows you to remember which banking service it is associated with). You can make up anything you want "on the fly" to the left of the @ symbol (as long it starts with a letter, and it's best to only use letters and numerals).
  • Now anytime a message arrives in your account sent to servicename@bank.yourdomain.com, the message will be automatically filed in the "bank" folder. If there is a subfolder in the bank folder named "servicename", the message will be filed into that folder automatically. If not, then it will be filed in the "bank" folder.
  • If you ever receive a suspicious message apparently from that bank, it might be a phishing email from a scammer. But if it's sent to the subdomain custom address (which only you and the bank's automated system should know, unless the bank had a security breach or sold your address to someone else), you know that email is guaranteed to be sent based on your original signup at that bank. A phishing scammer can use a fake From email address to attempt to fool you, but it is extremely unlikely they know your custom subdomain address for that bank, since you only shared that address with that one bank. It's not in any email sent to any of your friends and you should not use it for signups at any other banking service. You just make up a different alias (left of the @) for each service you sign up for. You can later use a rule at your account to block or file or redirect messages sent to that special address.
  • Using this system, I have found a few times over the years that a service where I signed up either sold my email address or had a security breach. A couple of these were defininitely security breaches at a bank, a big retailer, and an IT services company.
Bill

Last edited by n5bb : 20 Apr 2017 at 11:04 AM. Reason: Spelling corrections and other small changes
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Old 20 Apr 2017, 11:39 PM   #5
Bagnet
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Thanks @n5bb
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Old 25 Apr 2017, 12:17 AM   #6
jhollington
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Quote:
Originally Posted by n5bb View Post
Now anytime a message arrives in your account sent to servicename@bank.yourdomain.com, the message will be automatically filed in the "bank" folder. If there is a subfolder in the bank folder named "servicename", the message will be filed into that folder automatically. If not, then it will be filed in the "bank" folder.
This is actually a nice scenario and well-explained (as usual ), but unless I'm missing something, this isn't the way this would work, unless of course you've also defined a rule to file those messages. Since "bank" is an alias, rather than a plus address, there shouldn't be any automatic filing of messages sent to that address. For the same reason, I'm also not sure how "servicename" would be created as a sub-folder of a "Bank" folder, as opposed to a top-level folder.

I think the missing step here (and please correct me if I'm missing something else obvious ), is that the "bank" alias would have to be created to point to a plus address in the first place — something like either "yourname+bank@yourdomain.com" or "bank@yourname.yourdomain.com" rather than just your primary e-mail address. I think that would work the way you describe, since it gets converted to a plus address, and plus addresses can be stacked (so a message to "servicename@bank.yourdomain.com" gets translate to yourname+bank+servicename@yourdomain.com" and then handled appropriately).
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Old 28 Apr 2017, 09:24 PM   #7
n5bb
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Join Date: May 2004
Location: Irving, Texas
Posts: 8,081
Oops ... you are correct ... I forgot to include some details about using the wildcard plus+address +* in the alias target. I have been out of town and very busy this week, but within a few days I will go back and edit my earlier post to show the details. You have a choice when you choose the alias target on whether to file the message in folder A or folder B when messages are sent to the subdomain address A@B.domain.com. There is also a related choice on applying or ignoring subdomain addressing when using your own domain. Again, too much for now, but I will update this thread within a few days when I get back to it. Sorry I forgot to include those details earlier, but I set these features up several years ago on my main account and forgot about that alias target detail.

Bill
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Old 3 May 2017, 12:54 AM   #8
jhollington
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Quote:
Originally Posted by n5bb View Post
You have a choice when you choose the alias target on whether to file the message in folder A or folder B when messages are sent to the subdomain address A@B.domain.com.
Now that you mention it, I do remember that setting being there in the past, but I suspect it may have been a casualty of the new UI; setting up aliases now only allows you to type in specific addresses.

It's still totally possible to do this manually by typing in the target plus address yourself, of course (as I noted above), but there doesn't appear to be any specific option for it anymore.

Quote:
There is also a related choice on applying or ignoring subdomain addressing when using your own domain.
Fortunately, that option is still there under the Domain settings, with options to ignore plus addressing, use plus addressing, or reject mail addressed to a subdomain entirely.
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