WWW.EXFILE.COM, INC. -- 13819 -- j2 GLOBAL COMMUNICATIONS, INC. -- EXHIBIT 99.1 TO FORM 8-K

Kaufman Bros. 8^th Annual Investor Conference

(Based upon Second Quarter 2005 results)

September 8, 2005

www.j2global.com

Future operating results

Subscriber growth and retention

Earnings growth and expectations

New products, services and features

Corporate spending

Liquidity

Network capacity and coverage

Regulatory developments

Taxes

Certain statements in this presentation constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, particularly those contained in the slide entitled “2005 Financial Guidance”. These forward-looking statements are based on management’s current expectations or beliefs as of September 8, 2005 and are subject to numerous assumptions, risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements. Readers should carefully review the risk factors described in this presentation. Such statements address the following subjects:

Safe Harbor for Forward-Looking Statements

All information in this presentation speaks as of September 8, 2005 and any
distribution of this presentation after that date is not intended and will not be
construed as updating or confirming such information.

Risk Factors

Inability to sustain growth in our customer base, revenue or profitability

Competition in price, quality, features and geographic coverage

Inability to obtain telephone numbers in sufficient quantities on acceptable terms in desirable locations

Enactment of burdensome telecommunications or Internet regulations

Reduced use of fax services due to increased use of email or widespread adoption of digital signatures

Inadequate intellectual property protection or violations of third party intellectual property rights

System failures or breach of system or network security

Failure to expand and upgrade our systems and network infrastructure to accommodate increased traffic

Inability to adapt to technological change, or third party development of new technologies superior to ours

Economic downturns in industries which rely heavily on fax transmissions

Loss of services of executive officers and other key employees

Loss of third party suppliers and marketing relationships, and inability to enter into new such relationships
on acceptable terms

Other factors set forth in our Annual Report on Form 10-K filed on 3/28/05 and the other reports filed by
us from time to time with the Securities and Exchange Commission

The following factors, among others, could cause our business, prospects, financial condition, operating results
and cash flows to be materially adversely affected:

All brand names and logos are trademarks of j2 Global Communications, Inc. or its affiliates in the U.S. and/or internationally.

Unique Assets

9.3 million subscribed telephone numbers (DIDs)

Global advanced messaging network

1,500+ cities in 25 countries on 5 continents

13.6MM+ unique DIDs worldwide in inventory

Patented technology

A portfolio of 23 issued U.S. patents, and numerous pending U.S. patent
applications, issued foreign patents and pending foreign applications

Expertise

Effective customer acquisition strategies and Web marketing

Breadth, depth and management of a complex network & architecture

Strong financial position

33 consecutive quarters of Revenues growth

14 consecutive quarters of positive and growing Operating Earnings

35% year-over-year Revenues growth

$108.6MM of cash & investments to fund growth (as of 6/30/05)

Nominal amount of debt

Subscriber Acquisition

Individuals

Targeted Web marketing

(e.g. AOL, Hotmail, Yahoo!, Google, AT&T, United Online, etc.)

Sold primarily through: www.eFax.com and www.j2.com

Use of proprietary Life Cycle Management (i.e. Free Paid conversions)

Advertising & Calling-Party-Pays revenue supports the Free base

Small to Mid-Sized Businesses

Sold through: www.eFaxCorporate.com, supported by Telesales

Self-service Web-based broadcast fax engine at www.jblast.com

Outsourced email, spam & virus protection through Electric Mail

Use of proprietary Life Cycle Management (i.e. usage stimulation)

Large Enterprise/Government

Direct sales force

Marketed through Web and traditional direct selling methods

Use of proprietary Life Cycle Management (i.e. usage stimulation)

Paid Subscription Drivers

Six drivers for Paid subscription additions:

Subscribers coming directly to the Company’s Websites

Brand awareness

Search engine discovery

Free-to-Paid subscriber upgrades

Life Cycle Management

eFax Corporate SME sales

Hybrid Website and human interaction (i.e. Telesales)

Direct enterprise & government sales

Through the outside Corporate Sales team

Direct marketing spend for Paid subscribers

Targeted marketing

CPA deals

International marketing programs in Western Europe

Product Roadmap

Inbound Fax to Email

Outbound Fax via Email

Fax broadcasting

Secure fax

OCR

PDF delivery

Fax storage/archive

“Smart” Caller ID

New notification methods

Voice

Services

Inbound VM to Email

Voicemail management

Telephone access

Conference Calling

Enhanced voicemail

Call screening

Call forwarding

Voicemail interrupt

Collaboration

Unified

Messaging

& Comm.

Services

Integrated Email,
voicemail & fax services

Find me/Follow me

Wireless messaging and

notification

Virtual PBX

ProtoFax^®

Messenger 4.0

HotSend^®

PaperMaster Pro^®

Currently offered

Future opportunities

Document

Management

Email

Services

Permission-based

Email marketing

Outsourced Email

Spam control

Virus filtering

Message storage

Hosted Exchange^TM

Fax

Exchange is a registered Trademark of the Microsoft Corporation

Financial Highlights

Historical Revenue & Operating Income Growth

33 consecutive quarters of Revenue growth

14 consecutive quarter of Operating Earnings growth

Cost Trends

* Reflects a reclassification of certain network operations and depreciation expenses
  into Cost of Revenues, which was implemented in Q1 2005 (and is on-going),
  versus their historical inclusion in General & Administrative expenses.  See Slide
  #19 for a reconciliation to previously reported numbers.

2005 Financial Guidance

(Reaffirmed as of September 8, 2005)

(1)

Assumes an effective annual tax rate of 27% and 25.5 million fully diluted shares outstanding

(2)

Before gain on the sale of Oasis Semiconductor.

$0.48 – 0.49

$37.4 – 38.0

2005

$1.82 – 1.87

Net Earnings per Share ^(1,2)

$145 – 148

Revenues (millions)

Year-End

2005

Metrics

Fixed Subscriber Revenues

$9,916

$11,177

$12,121

$13,976

$16,021

$17,750

$19,122

$20,823

$22,773

$23,756

Variable Subscriber Revenues

4,538

5,130

5,685

5,542

6,041

7,314

7,863

8,226

8,502

10,323

Subscriber Revenues

$14,454

$16,307

$17,806

$19,517

$22,062

$25,063

$26,985

$29,050

$31,275

$34,079

Other Revenues

754

730

1,097

957

880

768

786

749

949

806

Total Revenues

$15,208

$17,037

$18,903

$20,474

$22,942

$25,831

$27,771

$29,799

$32,224

$34,885

DID Based Revenues

$14,063

$15,835

$17,478

$19,216

$21,664

$24,057

$25,994

$27,937

$30,186

$33,009

Non-DID Revenues

1,145

1,202

1,424

1,258

1,278

1,774

1,777

1,862

2,038

1,876

Total Revenues

$15,208

$17,037

$18,903

$20,474

$22,942

$25,831

$27,771

$29,799

$32,224

$34,885

Subscriber Revenue/Total Revenues

95.0%

95.7%

94.2%

95.3%

96.2%

97.0%

97.2%

97.5%

97.1%

97.7%

DID Based/Total Revenues

92.5%

92.9%

92.5%

93.9%

94.4%

93.1%

93.6%

93.8%

93.7%

94.6%

Fixed

Subscriber Revenues

68.6%

68.5%

68.1%

71.6%

72.6%

70.8%

70.9%

71.7%

72.8%

69.7%

Variable

Subscriber Revenues

31.4%

31.5%

31.9%

28.4%

27.4%

29.2%

29.1%

28.3%

27.2%

30.3%

Paid DIDs

(4)

304,969

348,988

380,230

400,245

434,616

469,328

515,162

553,949

598,490

641,720

Average Monthly Revenue/DID

$15.59

$15.52

$15.36

$15.73

$16.68

$17.22

$16.95

$16.87

$16.85

$17.21

Cancel Rate

(1)

3.6%

3.0%

2.8%

3.3%

2.9%

2.4%

2.6%

2.7%

2.8%

2.5%

Free DIDs

4,320,975

4,825,991

5,146,838

5,150,388

5,843,167

6,873,083

7,106,249

8,180,452

8,448,517

8,653,386

Average Monthly Revenue/DID

$0.05

$0.04

$0.05

$0.04

Total DID Inventory (MM)

5.8

6.5

6.7

7.1

8.6

9.5

11.3

11.9

12.7

13.6

Cities Covered

1,000

1,100

1,300

1,350

1,400

1,500

Countries Covered

Gross Margin

(3)

80.2%

80.9%

81.5%

82.6%

84.1%

84.3%

85.1%

79.8%

80.2%

Operating Margin

34.2%

36.1%

39.2%

41.4%

43.5%

42.6%

43.0%

44.0%

41.4%

44.0%

Cash/Funds Available for Growth

(millions)

$38.7

$46.5

$54.5

$63.8

$67.4

$74.2

$83.9

$93.8

$98.2

$108.6

Free Cash Flow

(2)

(millions)

$5.0

$7.1

$7.7

$9.5

$9.9

$11.6

$11.9

$10.9

$11.3

$13.8

(1)

Cancel Rate is defined as individual customer DIDs with greater than 4 months of continuous service (continuous service includes customer DIDs which are administratively cancelled and

reactivated within a calendar month), and DIDs realted to enterprise customers beginning with their first day of service. Calculated monthly and expressed here as an average over the three

months of the quarter.

(2)

Free Cash Flow is net cash provided by operating activities, less purchases of property and equipment. In Q4 2003, it excludes the benefit of $9.5 million to record the reversal of certain

valuation allowances of defered tax assets.

(3)

Reflects the inclusion of certain network operations and depreciation expense in Cost of Revenues in Q1 2005 versus its historical inclusion in General & Administrative expense.

(4)

For Q1 2005, reduced by 6,625 DIDs due to the discontinuance of a marketing trial.

2005

2003

2004

Reconciliation of previously reported

Cost of Revenues and General & Administrative Expenses for 2004

($ in thousands)

Q2-2004

% of Rev

Q3-2004

% of Rev

Q4-2004

% of Rev

Cost of Revenues

Previously reported

4,063

15.7%

4,363

15.7%

4,448

14.9%

Add: Certain network operations

and depreciation expenses

1,070

1,092

1,128

Adjusted Cost of Revenues

5,133

19.9%

5,455

19.6%

5,576

18.7%

Gross Margin

Previously reported

84.3%

85.1%

Adjusted Gross Margin

80.1%

80.4%

81.3%

General and Administrative Expenses

Previously reported

4,734

18.3%

5,321

19.2%

5,506

18.5%

Less: Certain network operations

and depreciation expenses

1,070

1,092

1,128

Adjusted General

and Administrative Expenses

3,664

14.2%

4,229

15.2%

4,378

14.7%

⁽¹⁾ In Q4 2003, excludes benefit of $9.5 million to record the reversal of certain valuation allowances of our deferred tax assets.

⁽²⁾Prior to Q4 2003, the Company accrued tax expense at the rate of 5% or less.

⁽³⁾ Net cash provided by operating activities, less purchases of property & equipment. Free Cash Flow amounts are not meant
as a substitute for GAAP, but are solely for informational purposes.

Computation of Free Cash Flow

($ in millions)

^(1,2)

Q1 '03

Q2 '03

Q3 '03

Q4 '03

Q1 '04

Q2 '04

Q3 '04

Q4 '04

Q1 '05

Q2 '05

Net cash provided by operating activities

$5.308

$8.542

$8.623

$10.375

$10.252

$13.044

$13.240

$14.785

$13.762

$15.227

Purchases of property & equipment

(0.300)

(1.414)

(0.947)

(0.906)

(0.319)

(1.442)

(1.337)

(3.883)

(2.473)

(1.420)

Free Cash Flow

(3)

$5.008

$7.128

$7.676

$9.469

$9.933

$11.602

$11.903

$10.902

$11.289

$13.807