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EXHIBIT 7 Blackout Period Notice Required By U.S. SEC Regulation BTR 245.104 To: The Management Employee Directors and Executive Officers of Sun Life Financial Inc. Section 306(a) of the Sarbanes-Oxley Act of 2002 and Regulation BTR promulgated by the Securities
and Exchange Commission prohibit management employee directors and executive officers of Sun Life
Financial Inc. (SLF), directly or indirectly, purchasing, selling or otherwise acquiring or
transferring any equity securities of SLF that they previously acquired in connection with their
employment as directors or executive officers of SLF during any blackout period during which U.S.
employees are not able to purchase or sell interests in such equity securities under their U.S.
retirement plans. This period is referred to as a Blackout Period. Participants in the Sun Life Assurance Company of Canada (U.S.) United States Employees Sun
Advantage Savings and Investment Plan (Plan) will not be able to carry out certain transactions
under the Plan during the Blackout Period referred to below as a result of a planned change in the
recordkeeper for the Plan. The Blackout Period that will apply to the common shares of SLF held in
the Plan will start after August 24, 2004 and will end during the week of September 20, 2004. The
transactions that will be suspended or affected during the Blackout Period are described in the
attached newsletter that has been provided to participants in the Plan. The purpose of this notice is to advise you that, during the Blackout Period, management employee
directors and executive officers of SLF may not, directly or indirectly, purchase, sell or
otherwise acquire or transfer any common shares of SLF that they previously acquired in connection
with their employment as directors or executive officers of SLF. If you have any questions concerning this notice or wish to confirm the date on which the Blackout
Period will end, you should contact Eric Weinheimer, Assistant Vice-President, Law, Sun Life
Assurance Company of Canada, 150 King Street West, Toronto, Ontario, M5H 1J9, phone (416) 979-4825.   Employee Booklet Describing Changes to the Sun Life Savings and Investment Plan imagine it. achieve it. Plan Changes United States Employees Sun Advantage Savings and Investment Plan* The Sun Advantage Plan is making changes and introducing the following new features:  
    New Investment Options Choose from four new funds for more investment flexibility.
    New Investment Planning Tools Get investment and retirement planning guidance and
optional advisory services.
    New Plan Web Site Access 24/7 online account management and investor education. These and other enhanced Plan features will make it easier for you to design a long-term investment
strategy to meet your goals, and make it simpler for you to manage your account along the way. See inside for more... Sun Life Financial *The United States Employees Sun Advantage Savings and Investment Plan is sponsored by Sun
Life Assurance Company of Canada (U.S.), a member of the Sun Life Financial group of companies.




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Plan Transitions A New Recordkeeper with a Familiar Name
After re-evaluating our earlier decision to change Plan recordkeepers, we have decided to leverage
our long-term relationship with CitiStreet, our current recordkeeper. We will transition the
administration of the Sun Advantage Plan to a division of CitiStreet that offers added
state-of-the-art features and participant services. This newsletter highlights the new benefits
that will be available to you and provides important transition dates. Not Saving Yet?
Its never too late to start saving for retirement. Join the Sun Advantage Plan today, and you will
be ready to take advantage of all the new features. Call SunDial at 1-800-786-7816 and get started
on the road to financial security. Plan Ahead for the Transition Period
Moving Plan records and assets to the new CitiStreet system will take approximately three weeks in
order to ensure that all account information is transferred accurately and completely. During this
transition period, scheduled to begin at 4:00 p.m. Eastern time on September 1, 2004, account
access will be restricted. You will not be able to make changes to your account, including
transferring money among funds, changing your deferral percentage, and requesting loans and
distributions. Full access will resume the week of September 20, 2004. When full plan access
resumes, information regarding the new Plan Web site will be mailed to your home address. Beginning
at 8:00 a.m. Eastern time on September 8, 2004 all inquiries should be directed to the new Sun
Advantage Information Line at 1-800-871-6223. Your savings will remain invested and all contributions and loan repayments (if applicable) will
continue to be deducted from your pay and invested according to your current investment elections
throughout the transition period. The value of your account will fluctuate as it always does, even though you wont be able to make
any changes. For this reason, it is very important that you review the appropriateness of your
current investments. For your long-term retirement security, you should carefully consider the
importance of a well-balanced and diversified investment portfolio. In connection with the Sun Life
Financial Stock Fund, you should be aware that there is a risk to holding substantial portions of
your assets in the securities of any one company, as individual securities tend to have wider price
swings, up and down, in short periods of time, than investments in diversified funds. Company stock
that has wide price swings might experience a large loss during the transition period, and you will
not be able to direct the sale of such stocks from your account. If you want to make changes to your account before the transition period begins, you will have to
complete your transactions before 4:00 p.m. Eastern time on September 1, 2004. Please note the key
dates listed in the table. Full access to your account will resume the week of September 20, 2004. Transition Period Key Dates
If you wish to request any transactions prior to the blackout dates listed below, please call
SunDial at 1-800-786-7816 or access SunDial online at http://mpls.csplans.com/citistreet. Once the
new Plan is fully operational, the week of September 20, 2004, you will have a new Web site address
and a new PIN that you will use for all future account transactions.  August 24, 2004
    
    
    Last day to request distribution in shares from the Sun Life
Financial Stock FundSeptember 1, 2004
    
    
    Last day to complete the following transactions: Investment election changes for future contributions Compensation deduction rate changes Rollover contributionsSeptember 1, 2004
    
    
    Last day to request the following transactions: Request a loan* Request a hardship distribution** Request age 59-1/2 in-service distribution* Request regular distribution*September 1, 2004
    
    
    Last day to transfer money among investment fundsSeptember 7, 2004
    
    
    Plan assets transfer in-kindWeek of September
20, 2004
    
    
    Full account access resumes and all new Plan features operational




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*Please note that the appropriate forms for any distribution or loan request (including spousal
consents as applicable) must be submitted to the address on the forms no later than 4:00 p.m.
Eastern time on September 1, 2004.**Please note that hardship requests and associated forms must be submitted to the Sun Life
Financial Human Resources Department no later than 4:00 p.m. Eastern time on September 1, 2004. Plan Enhancements New Investment OptionsAs part of an ongoing effort to provide you with a broad range of investment options, the following four funds
will be added to the existing fund lineup:
  
    Selected American Shares, Inc.  
    T. Rowe Price Mid-Cap Value Fund  
    Fidelity Small Cap Stock Fund  
    Fidelity Advisor Diversified International Fund I Shares With the addition of these new investment options, you will have more flexibility to create a
diversified investment strategy to meet your goals. Please see the enclosed fund fact sheets for
details on all of the Plan funds with the exception of the Sun Life Financial Stock Fund fact sheet
that will be sent to you at a later time. Sun Advantage Plan Investment Options
INVESTMENT OPTIONS
Vanguard Retirement Savings Trust III
Vanguard Total Bond Market Index Fund Admiral Shares
MFS Government Securities Fund (A)
MFS High Income Fund (A)
MFS Total Return Fund (A)
Massachusetts Investors Trust (A)
Vanguard 500 Index Fund Admiral Shares
Fidelity Blue Chip Growth Fund
T. Rowe Price Equity Income Fund
MFS Growth Opportunities Fund (A)
J.P. Morgan Capital Growth Fund (A)
Fidelity Low-Priced Stock Fund
T. Rowe Price International Stock Fund
Sun Life Financial Stock Fund
Selected American Shares, Inc. NEW
T. Rowe Price Mid-Cap Value Fund NEW
Fidelity Small Cap Stock Fund NEW
Fidelity Advisor Diversified International Fund I Shares NEW New Investment Planning Tools You can choose expert guidance, which includes retirement income forecasts and plan-specific
asset allocation models  at no charge! Or, for a small fee, the CitiStreet Advisor Service
provides expert investment advice from licensed financial advisors. You can access the advice
service either online or over the phone.* You may request:  
    personalized investment and retirement planning advice,  
    ongoing access to personal Financial Advisors,  
    ongoing monitoring and account rebalancing, and  
    personalized statements and forecasts. The CitiStreet Advisor Service can help you make the most of your retirement planning. *For more information about the optional Advisor Service provided by CitiStreet Advisors LLC,
please read the Investment Services Agreement before deciding to participate.
The CitiStreet Advisor Service is powered by Financial Engines. Financial Engines is a registered
trademark of Financial Engines.
CitiStreet Advisors LLC does not give tax or legal advice. If you need tax advice, talk to your
accountant or lawyer. If you need legal advice, talk to your lawyer.




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Can You Save Even More?
This Plan transition is an excellent time to re-evaluate your retirement savings strategy. Even a
small increase in Plan contributions can potentially make a big difference in your account value
over time. Call SunDial at 1-800-786-7816 to boost your deduction rate. Expanded Plan Web Site
The new Sun Advantage Plan Web site will feature simpler navigation and features, including a
comprehensive investor Resource Center where you can learn the basics of investing for retirement,
and enhance your knowledge of many other financial topics. Online Account Statements
Instead of waiting for paper statements to arrive in the mail each quarter, you can go online any
time and call up your account information for just about any date range you specify. This
convenient feature makes it much easier to stay on top of your account status and to keep track of
your investment performance. New Telephone number and PIN coming!
The enhanced Plan will include a new telephone access number for all account transactions and
access to Participant Services Representatives. You will receive a new six-digit Personal
Identification Number (PIN) mailed under separate cover. Watch for more information towards the end
of the transition period. Important Fund Changes Fidelity Low-Priced Stock Fund Will Close to New Investors
The Fidelity Low-Priced Stock Fund will close to new investors as of 4:00 p.m. Eastern time on July
30, 2004. If you do not have a balance in the Fund by July 30, you will not be allowed to invest in
the Fund  either through exchanges or by directing contribution elections  after that date. If
you currently have a balance in the Fund, and as long as you maintain a balance, you will continue
to be able to direct future contributions and exchanges into the Fund. In addition, there will be a temporary moratorium on all investments in the Fidelity Low-Priced
Stock Fund from 4:00 p.m. Eastern time on July 30, 2004 until the week of September 20, 2004.
During this period, all contributions directed into the Fund for paydates through August 27, 2004,
will instead be directed into the Stable Value Fund. After that date, all contributions directed
into the Fund for paydates through September 24, 2004, will instead be directed into the Vanguard
Retirement Savings Trust III (formerly the Stable Value Fund  see below for details on this fund
change). You will not be allowed to transfer any money into the Fidelity Low-Priced Stock Fund
during the moratorium period. After the enhanced Plan becomes fully operational, the week of
September 20, 2004, all current Fidelity Low-Priced Stock Fund investors must re-elect the
percentage of payroll contributions directed into this Fund. Otherwise, the contributions you
formerly had directed into the Fidelity Low-Priced Stock Fund will continue to be directed into the
Vanguard Retirement Savings Trust III. Massachusetts Investors Trust Will Close to All Investors
Effective 4:00 p.m. Eastern time on September 1, 2004, the Massachusetts Investors Trust will close
to new investors. If you currently have a balance in this fund, and as long as you maintain a
balance, you will continue to be able to direct future contributions and exchanges into this fund.
However, your balance in this fund will need to be exchanged out of the fund within the next 13
months  by September 1, 2005. If you determine that you would like to invest in the Massachusetts Investors Trust as part of your
long-term retirement strategy, and you are not currently invested in this fund, you must transfer
money into this fund prior to 4:00 p.m. Eastern time on September 1, 2004. Call SunDial at
1-800-786-7816 to request a fund exchange. The Stable Value Fund Is Changing
Effective September 7, 2004, all units of the Stable Value Fund will be converted to shares of the
Vanguard Retirement Savings Trust III. This change will result in lower fund management fees.
Currently, the Stable Value Fund is assigned a unitized value to reflect the investment experience
of its two underlying investment components on a prorated basis  the Vanguard Retirement Savings
Trust (96%) and a Money Market investment (4%). The Vanguard Retirement Savings Trust III is not a
unitized fund.




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Sun Life Financial Stock Fund Change
The Sun Life Financial Stock Fund will continue to be unitized; however, the money market vehicle
(representing 3% to 5% of the Fund value) will now be invested in the State Street Global Advisors
Short Term Investment Fund to meet daily liquidity requirements. Questions?
More details on Plan features will be coming soon. In the meantime, if you have any questions about
how these changes may affect you, please call SunDial at 1-800-786-7816 up until 4:00 p.m. Eastern
time on September 7, 2004. Starting at 8:00 a.m. Eastern time on September 8, 2004, all inquiries
should be directed to the new Sun Advantage Information Line at 1-800-871-6223.