SYNCContains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.

SYNACORNASDAQ: SYNC

DRI V I NG GROW TH I N ATTRACTI VE D I G I TAL MARKETS

AT&T SELECTS SYNACOR TO ENABLE

PORTAL SERVICES

MAY 5, 2016

SYNC

SYNC

SAFE HARBOR

"Safe Harbor" statement under the Private Securities Litigation Reform Act of 1995: This presentation contains forward-looking statements

concerning Synacor’s expected financial performance as well as Synacor’s strategic and operational plans. The achievement or success of the

matters covered by such forward-looking statements involves risks, uncertainties and assumptions. If any such risks or uncertainties materialize

or if any of the assumptions prove incorrect, the company's results could differ materially from the results expressed or implied by the forward-

looking statements the company makes. Synacor is under no obligation to, and expressly disclaims any such obligation to, update or alter

forward-looking statements, whether as a result of new information, future events, or otherwise.

The risks and uncertainties referred to above include - but are not limited to - risks associated with: execution of Synacor’s plans and strategies;

the loss of a significant customer; the company’s ability to obtain new customers; expectations regarding consumer taste and user adoption of

applications and solutions; developments in Internet browser software and search advertising technologies; developments in display advertising

technologies and practices; general economic conditions; expectations regarding the company's ability to timely expand the breadth of services

and products or introduction of new services and products; consolidation within the cable and telecommunications industries; changes in the

competitive dynamics in the market for online search and display advertising; the risk that security measures could be breached and

unauthorized access to subscriber data could be obtained; potential third party intellectual property infringement claims; and the price volatility

of Synacor’s common stock.

Further information on these and other factors that could affect the company's financial results is included in filings it makes with the Securities

and Exchange Commission from time to time, including the section entitled "Risk Factors" in the company's most recent Form 10-K filed with the

SEC. These documents are available on the SEC Filings section of the Investor Information section of the company's website at

investor.synacor.com.

2Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.

SYNC 3

MISSION

Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.

We enable our customers to

better engage with their

consumers

3

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TRUSTED TECHNOLOGY DEVELOPMENT, MULTIPLATFORM SERVICES

AND REVENUE PARTNER

Managed Portals Email/CollaborationVideo Platform/Cloud IDAd Solutions

Operate 50 portals 120M monthly visitors

Authentication Reaches 75M Pay TV subscribers 500M mailboxes

Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc. 4

SYNCContains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.

Then: 1Q ‘14

MASSIVE TRANSFORMATION AT SYNACOR

• Desktop: Portals, Search,

Advertising, ServicesPRODUCTS

• 50 Service ProvidersCUSTOMERS

• United StatesGEOGRAPHY

• Direct SalesCHANNEL

• 80% Search & Advertising,

• 20% Fee-Based RevenueREVENUE

• 20 Million

Monthly Portal VisitorsREACH

• Multiplatform: Portals, Search, Advertising, Email,

Video, Cloud ID

• 120 Service Providers

• 3500 Enterprises, 1000 Web Publishers

• Worldwide

• Direct Sales, 1500 Resellers

• 60% Search & Advertising

• 40% Recurring and Fee-Based Revenue

• 120 Million Monthly Total Visitors

Now: 1Q ‘16

5

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WINNING NEW CUSTOMERS

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120

Service

Providers

1,000

Government

Agencies

2,500

Businesses

1,000

Web Publishers

Won many email/collaboration

engagements with domestic and

international government agencies,

such as:

The National Space Institute for India

The Ministry of Foreign Affairs of The Russian Federation,

an international defense agency

the New York State Assembly

Won multiple contracts with

communications providers to

deploy Synacor’s End-to-End Video

Solutions

Won and expanded contracts with

several communications companies

for next-generation portals

Serve 1,000+ publishers through

the acquisition of Technorati

Syndicated ad-supported video

content modules to web

publishers

Won key new email/collaboration

deals for many business

enterprises, such as:

a large insurance and financial services company

the leading network technology service provider for many industries in Indonesia

a leading retailer in Indonesia

a leading provider of ICT infrastructure services in Thailand

SYNCContains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc. 7

AT&T SELECTS SYNACOR TO ENABLE PORTAL SERVICES

120

Service

Providers

1,000

Government

Agencies

2,500

Businesses

1,000

Web Publishers

In partnership with AT&T, Synacor will:

• Develop and manage innovative desktop and

mobile portal services designed to drive user

engagement

• Populate these portal experiences with rich

Internet content sourced from popular brands

• Monetize these experiences through search and

advertising

Synacor honored to be selected by AT&T:

• Synacor selected in AT&T RFI process

• Portal services designed to engage AT&T’s

user audience

• 3 year deal with auto-renewals

• Value of ~$100M per year upon full

deployment

INITIAL LAUNCHES IN 2H2016, NEXT-GEN PRODUCTS IN 2017

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WE ENABLE OUR CUSTOMERS TO BETTER ENGAGE WITH THEIR CONSUMERS

120

Service

Providers

1,000

Government

Agencies

2,500

Businesses

1,000

Web Publishers

Why we believe AT&T chose Synacor:

• A proven managed portal services platform

• Significantly improved monetization across

mobile and desktop, video and display

• Flexible technology and UX that serves as a

foundation for next-gen development

• A relevant product portfolio and strong team to

enable additional services as needed

How all Synacor customers benefit:

• Benefits of platform development to

drive engagement shared across all

customers

• Increases scale of traffic to deliver

higher quality content and improved

search and advertising monetization

• Strengthens Synacor’s financial profile

and competitiveness

STRONG PIPELINE OF ADDITIONAL CUSTOMER OPPORTUNITIES

SYNC

INVESTMENT HIGHLIGHTS

Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc. 9SYNC

A Transformation Story with Multiple

Profitable Growth Avenues

STRONG

OPPORTUNITIES

FOR GROWTH

NEW

MANAGEMENT

TEAM

RECURRING AND

FEE-BASED

REVENUE

MASSIVE

TRANSFORMATION

ON A PATH:

• 3 YEARS (2019)

• $30M EBITDA

• $300M REVENUE

SYNC

SYNACOR’S PATH TO 3/30/300

GENERATING $300M IN REVENUES AND $30M IN EBITDA IN 3 YEARS

Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.

$8M

Revenue, $Millions

$106.6 $110.2

2014 2015

Adjusted EBITDA*, $Millions

$2.2

$7.6

2014 2015

10

*Please refer to the appendix for information regarding the reconciliation of GAAP net loss to adjusted EBITDA for twelve months

ended December 31, 2014 and December 31, 2015.

PLANS TO INVEST $10 MILLION OVER 12 MONTHS TO DEVELOP AND DEPLOY AT&T

~$300

2019E

~$30

2019E

2016 OBJECTIVES

• Win new portal customers

• Become significant player in programmatic advertising

• Win new video platform customers

• Extend Cloud ID into new customer verticals

• Leverage Zimbra partner community to accelerate feature development and grow email/collaboration sales

• Launch open source support offering for email

• Introduce Synacor products into new geographies

11

✔

SYNC

THANK YOU

12Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc. SYNC

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APPENDIX

13Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc. SYNC

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ADJUSTED EBITDA RECONCILIATION

Contains proprietary and confidential information owned by Synacor, Inc. © / 2016 Synacor, Inc.

$8M

14

Q1 2014 Q2 2014 Q3 2014 Q4 2014 2014 Q1 2015 Q2 2015 Q3 2015 Q4 2015 2015

Revenue 25,248 24,191 26,231 30,910 106,580 26,730 24,716 26,351 32,448 110,245

Net Loss (2,056) (1,868) (2,596) (6,418) (12,931) (1,073) (1,082) (931) (388) (3,474)

Provision (benefit) for income taxes (684) (641) (1,288) 7,434 4,821 4 16 10 209 239

Interest expense 88 23 75 32 218 50 59 35 102 245

Other (income) expense (8) (6) 14 29 28 16 (17) 32 (16) 16

Depreciation & amortization 1,058 1,117 1,133 1,818 5,126 1,496 1,660 1,560 2,185 6,901

Stock-based compensation expense 681 847 1,226 842 3,595 742 800 810 764 3,115

Loss on equity interest 246 344 239 234 1,063 32 25 - 16 73

Gain on sale of domain - (1,000) - - (1,000) - - - - -

Reduction in workforce - - 1,260 - 1,260 - - - - -

Acquisition costs - - - - - - - 478 - 478

Adjusted EBITDA (675) (1,184) 63 3,971 2,180 1,267 1,461 1,994 2,872 7,593