Migrating email accounts to FastMail

I keep planning to add this to the documentation, but I thought I’d write it up quickly as a blog post.

One recurring question we have get is people asking the best way of migrating accounts from an existing system to a new FastMail family/business package. Basically there’s two main approaches:

  1. All in one go
  2. One account at a time

The documentation below helps explain these two approaches, and the other tools we provide to help you migrate accounts from other services to FastMail.

All in one go

The main advantage of this process is that it’s a decisive cut-over from the old system to the new. The disadvantage is that after you change the MX records, you have to run the IMAP Migrate for all users so they get their existing email at FastMail, and if any users use email software (eg Outlook Express, Thunderbird, etc), you have to update all of them to use the new server names at once after the MX change over.

  • Signup your family/business at FastMail (just follow the links near the bottom of the login screen at http://www.fastmail.fm)
  • During the signup, add any domains you want to use, even if they’re currently hosted externally
  • Create the accounts you want (eg john@example.com, etc) and any aliases you want
  • When all the accounts & aliases are setup and ready, switch the MX records for your domain to point to us. Depending on the TTL of the domain, after about an hour all new email should be delivered to FastMail servers, and thus the FastMail accounts
  • Use the Options -> IMAP Migrate feature for each user to copy email from the old accounts to the new accounts
One account at a time

The main advantage of this process is that it allows you to move one account at a time from the old system to FastMail giving you time to gradually move users. For each user, you can migrate them, update that users email software to access our servers, and generally ensure that each transfer is smooth and complete, before moving onto the next user.

  • Signup your family/business at FastMail (just follow the links near the bottom of the login screen at http://www.fastmail.fm)
  • During the signup, add any domains you want to use, even if they’re currently hosted externally
  • For each user you want to migrate, repeat the following steps:
    1. Create the account at FastMail (eg john@example.com)
    2. At your existing site, setup a forward to forward all email arriving at the old site for john@example.com to us via one of our forwarding tunnel addresses (see below). Once you’ve done that, any new email that arrives at the old site will be forwarded to us
    3. Login to the john@example.com account at FastMail, and use Options -> IMAP Migrate to copy all the email from your old server to us
    4. At this point all old mail will have been copied to us, and any new email will be forwarded to us
    5. Update the users email software to connect to our servers and/or tell them to login to are webmail interface
  • Once you’ve done all accounts, change the MX records to point to us, completely removing the old site from handling your email. Everything moved over, no downtime, no lost email, no interruption
Forwarding Tunnel

The forwarding tunnel (previously documented here) allows you to forward email from an existing service to an account with the same name at FastMail. eg Say you have the account john@example.com at an existing service. You want to create your account as john@example.com at FastMail, but how do you forward from the old john@example.com account to the FastMail john@example.com account while the DNS still points to the old server? This is what the forwarding tunnel solves.

It basically gives an extended email address syntax that you can forward email to, which will deliver to our servers, and then decode to the account name. There are 3 encoding options because some providers are limited by what characters you can put in an email address to forward to.

To forward email to the FastMail account john@example.com, you can forward to any of these 3 addresses:

IMAP Migrate

The Options -> IMAP Migrate feature allows you to migrate email from an existing IMAP server to FastMail. During the migration, it will attempt to preserve the existing folder structure, emails and email state (eg seen or unseen) from the existing server. The migration may take some time depending on the size of the account it’s migrating. The migration will run in the background, and will email you when it’s completed with a status report of what it did and if it encountered any problems. In general if it does encounter problems, it will try several times on a folder before giving up and moving to the next folder.

The most common reason for problems are:

  1. Buggy IMAP servers – we’ve seen buggy IMAP servers that just “crash” and close the connection when trying to retrieve some emails. Unfortunately when this happens there’s not much we can do to retrieve the problem emails
  2. Hidden rate limits – this seems to be a particular problem with large gmail accounts. Technically google never advertise that gmail accounts have any limits, but it seems if you retrieve a large number of emails from a gmail account in a short time, it will just close the connection to the other side with no explanation or warning. The IMAP Migrate feature gives you the option to migrate individual folders at a time, so if you do have disconnect problems, you can migrate problem folders individually
Posted in Technical. Comments Off on Migrating email accounts to FastMail

OS X Mail App configuration

We’re trying to track down some configuration issues with the OS X Mail App. If you use the OS X Mail App, can you please see the forum thread below and reply with your details and experiences so we can build some picture of what has been working for people and what hasn’t.


Posted in Technical. Comments Off on OS X Mail App configuration

Hotmail access via Pop Links update

On March 22, I posted about how Microsoft are planning on closing WebDAV access to Hotmail accounts.

It appears there has been a large outcry about the disabling of WebDAV access, and Microsoft have decided to NOT disable access at the end of June. However I wouldn’t expect this to last forever, as the linked update notes:

From the feedback we received, it became clear that you needed additional time to evaluate alternative solutions and with this in mind, we are postponing the transition deadline previously announced.  This means that you will continue to be able to access your Windows Live Hotmail accounts from Outlook Express beyond the June 30 transition deadline.

[My emphasis added]. So clearly they still plan to disable WebDAV access, and move to their proprietary DeltaSync protocol. We recommend that you should still be planning on how to move away from Hotmail. Once they turn off WebDAV access, you’ll be locked into using Microsoft’s proprietary protocol that only their software can read. You won’t be able to freely access your own data using open standard protocols and systems.

Here’s a brief checklist of things you should do to move off Hotmail

  1. Setup your new email address. You can use one of our domains, but for real flexibility, we recommend you buy yourself your own domain name. There’s lots of domain registrars out there, and it’s only about $10/year for your own domain. Then setup an Enhanced account, or Family/Business package so you can host email for your own domain at FastMail. That way your email address is never tied explicitly to any one provider
  2. Email all your known contacts and tell them to use your new address. Feel free to tell them that you don’t like the idea of Microsoft forcing you into using their proprietary software and not giving you an open standard way to access your email
  3. Create a “Hotmail” folder at FastMail, and setup a Pop Link on the Options -> Pop Links screen to regularly pull email from Hotmail to FastMail into the Hotmail folder
  4. As email comes into your Hotmail folder, you’ll be able to find out all the existing people or mailing lists or newsletters signed up to your old Hotmail address, and over time update those subscriptions to your new address
  5. Setup your favourite email software to access your FastMail account via IMAP so you can keep using the web interface and your email software and everything will stay in sync
  6. Download IMAPSize and make a local copy of all your email. You end up with the best of both worlds. Your email in “the cloud” with access available everywhere (home, work, mobile, friend, internet cafe, etc), AND a local copy saved on your computer so you’re never are stuck with your data at one provider
Posted in News. Comments Off on Hotmail access via Pop Links update

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