Feature descriptions

Note that FastMail.FM has many features not mentioned here. This is just a summary of those features which have different options for different membership levels. We also have a page showing exactly which membership levels have which features.

Web-based email
Is web interface access included
IMAP
Is IMAP access included (sophisticated mail reading and synchronization protocol supported by most current mail software)
POP3
Is POP3 access included (basic mail reading protocol required by some older email software)
POP/Hotmail Links
Can external POP and Hotmail accounts be accessed and messages downloaded to your mailbox)
Technical Support
FastMail.FM has an extensive help system covering all aspects of the service that all users have full access to. In addition, Full and Enhanced subscribers get free technical support via email. Enhanced subscribers' requests are placed in a priority queue and are normally answered in under 12 hours.
Mail Forwarding
Guests cannot use any email forwarding. All other accounts get full custom forwarding, where certain emails can be forwarded based on criteria, and optionally a copy can be left on the server
SMTP
Is SMTP access included. Almost all ISPs provide access to an SMTP server, so for most customers use of FastMail.FM's SMTP server will not be necessary (since FastMail.FM can be used for reading mail with IMAP while your ISP's SMTP server is used for send messages). People who use multiple ISP's but do not want to switch SMTP servers regularly will probably want to use FastMail.FM's SMTP server
Virus scanning
Advanced: received messages are checked by our virus scanner on the server, which can be turned on or off for each account. Basic: messages are checked for some common email worms
Spam protection
Advanced: received messages are analysed by a sophisticated Artificial Intelligence algorithm and compared to common spam features; fully customisable filtering based on "spam score"; messages from POP and Hotmail links also checked. Basic: Source of each message is checked for likely spam sources
Aliases
Members can sign up for one additional address, which is their existing username in an additional domain. Full accounts get 3 aliases, which can be different names in any of FastMail.FM's domains (dictionary words and common first/surnames are not permitted). Enhanced accounts can have 5 aliases, plus 10 addresses in their own domain (does not include domain registration fee)
Min username chars
Minimum length of username. Dictionary words and common first/surnames are not permitted except for Enhanced and Full account user names. All aliases must be at least 5 characters.
Own subdomain
All members get access to their very own subdomain. For instance, the account "yourname@fastmail.fm" gets to use the domain "yourname.fastmail.fm". Any email sent to any address in this domain will be sent to that mailbox. In addition, email sent to "foldername@yourname.fastmail.fm" will automatically be filed into a folder called "foldername" for you. These features are great for managing mailing lists, registrations, and for avoiding spam by setting up reject filters for addresses that get on spammers' lists
Storage quota
How many megabytes of storage space is provided for email. A warning is sent if an account goes over 80% full
Maximum attachment size
The largest size for the total of all attachments to a message, either sending or receiving. Slightly larger attachments may get through depending on their encoding, but this is the guaranteed minimum.
Monthly transfer quota
How many megabytes of traffic can go through the account. A one megabyte message to one recipient results in two megabytes of traffic, since it is received from your PC (1MB) and sent to the recipient (1MB). Sending a one megabyte message to nine people creates ten megabytes of traffic, using the same logic
Extra transfer / GB
Cost of extra traffic beyond the transfer quota. You can choose whether or not your credit card is automatically charged as required for additional traffic. If you choose not to use automatic charging, your account will be locked until the end of the month or until you pay for the necessary bandwidth. Guest accounts do not have the option for automatic charging—they must first become a FastMail.FM member
Hourly transfer quota
Amount of traffic permitted through account in one hour. Account will be locked for an hour if this limit is reached
Hourly message quota
Number of message items permitted through account in one hour. A "message item" is one message sent to one recipient. Non-subscribers have lower quotas to avoid the possibility of mail abuse
Account closed
Days of inactivity before the account is automatically closed. Logging in through the web, POP, IMAP, or SMTP causes the counter to reset. If you are going on an extended vacation you can put your account "on hold" which causes messages to not be delivered (the sender gets back a message that your account is on hold) but the account will not be closed
Mailing list binaries allowed
FastMail.FM accounts may not be used for sending or receiving messages to mailing lists which contain large attachments if you are not a member. These types of lists (e.g. adult images distribution lists) generate very high traffic and too many complaints and are too expensive for us to provide for non-members
Address book
How many addresses can be added to the address book
Personalities
How many "personalities" can be created. Multiple personalities let you send from multiple email addresses with different signatures for each one. In the future that will also let you automatically route mail to your different aliases to different folders (and even put replies in different Sent folders)
Pop links
How many external POP or Hotmail links can be used for downloading mail from other accounts
Poll window
The poll window is a small window that shows you when you have got mail (if you leave the poll window on the side of the screen, or by updating a button in the task bar if using Windows). Different membership levels have different limits as to how often this will automatically refresh (note that if you use IMAP software you will automatically be notified of new mail as soon as you receive it, even for guests!)
Commercial use allowed
Do the Terms of Service for this account allow commercial use
Own domain names
Is possible to receive email sent to one of your own domains rather than FastMail.FM's domains
Secondary email address required
Is it necessary to have a backup email account to authenticate your identity when you sign up, or is a credit card required. (Guests require a backup email account to help us combat email abuse).
Ads
Will any advertising be shown on the site, or tag-lines added to outgoing mail sent through the web interface (IMAP users will not experience ads, of course)
Address book groups
Can "groups" be created, where sending to just one address causes the email to be sent to multiple recipients
Address book synchronization
Can the FastMail.FM synchronization tool be used with this account. This tool copies all changes to your personal address book (in Outlook Express, Eudora, etc) to your FastMail.FM address book, and visa versa. It also does this for your bookmarks/favorites
Auto-get POP on IMAP
Normally messages are downloaded from POP links either manually (by pressing a button) or at regular intervals (no more than every 3 hours). Enhanced accounts can use a special "auto-link" mode which downloads from all POP links any time you log into your account through an IMAP client
Mail notification
Can this account receive SMS, pager, IM, or email notifications at another account when mail is received
File storage
Can files be stored (your own private web site!)
File storage quota
Maximum amount of storage available in your file space.
Maximum file size
The largest size of a single file allowed in your file storage.
Monthly file transfer quota
How many megabytes of traffic is allowed for your file storage space in a month. This is reset at the start of each month.
Hourly file transfer quota
Amount of traffic permitted for your file storage in one hour. When the limit is exceeded, your file storage is locked for one hour. Note that your email is NOT locked.
DAV Access
Can file storage be accessed using DAV (allows you to use Windows Explorer and similar tools to directly access your files!)
Advanced rules (Custome Sieve script)
Allows you to script advanced rules using the Sieve language to reject/forward/discard mails or file mails into different folders based on the information in the headers of the mail.
Notepad entries
Number of notes that you can store in your 'Notepad' page.