Customer Success Manager
Current
May 2022 - Present
AeroLeads people directory · profile
Jeff Posner Email & Phone Number
Customer Success Manager at Mimecast
at
Mimecast
2 work emails found
@sprint.com
LinkedIn matched
✓ Verified May 2026
3 data sources
Profile completeness 86%
Current company
Role
Customer Success Manager at Mimecast
Location
Norwood, Massachusetts, United States
Company size
Who is Jeff Posner? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Jeff Posner is listed as Customer Success Manager at Mimecast at Mimecast, a company with 1870 employees, based in Norwood, Massachusetts, United States. AeroLeads shows a work email signal at sprint.com and a matched LinkedIn profile for Jeff Posner.
Jeff Posner previously worked as Customer Success Manager at Mimecast and Implementation Manager at T-Mobile.
Company email context
Email format at Mimecast
This section adds company-level context without repeating Jeff Posner's masked contact details.
{first_initial}{last}@sprint.com
79% confidence
AeroLeads found 2 current-domain work email signals for Jeff Posner. Compare company email patterns before reaching out.
Profile bio
About Jeff Posner
Customer success expert with proven track record of meeting the complex needs of strategic customers. Over fourteen years experience developing and maintaining relationships with external and internal contacts. Trained, presented to, and worked directly with everyone from end users to C-suite executives.
Listed skills include Telecommunications, Wireless, Mobile Devices, 4G, and 14 others.
Current workplace
Jeff Posner's current company
Company context helps verify the profile and gives searchers a useful next step.
Mimecast
4 roles
Jeff Posner work experience
A career timeline built from the work history available for this profile.
Implementation Manager
Aug 2020 - May 2022
Implementation Project Manager
Develop and own partnerships with strategic accountsMaintain close relationships with account executives Analyze utilization patterns to identify potential risks and opportunitiesDevelop and execute unique deployment plans for new Sprint customersLead cross-functional project planning callsAct as primary point of escalation for technical issuesTrain.
Sep 2007 - Apr 2020
Specialized Care
Managed a deck of over 100 state and local government accounts with over 10,000 active lines of serviceAct as single point of contact for all things customer service related including: Device troubleshootingSwaps/activationsPlan and feature changesBilling
Jun 2006 - Sep 2007
Team & coworkers
Colleagues at Mimecast
Other employees you can reach at mimecast.com. View company contacts for 1870 employees →
RB
Rex Black
Colleague at Mimecast
Greater Brisbane Area, Australia
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SL
Samuel Lozeau
Colleague at Mimecast
Hopkinton, Massachusetts, United States, United States
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CM
Christian Matthew Viray
Colleague at Mimecast
Quezon City, National Capital Region, Philippines, Philippines
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SC
Sean Carey
Colleague at Mimecast
East Bergholt, England, United Kingdom, United Kingdom
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MF
Mateusz Fornal
Colleague at Mimecast
Cracow Metropolitan Area, Poland
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RG
Rakesh G.
Colleague at Mimecast
Hyderabad, Telangana, India, India
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RA
Rachael A. Agruso
Colleague at Mimecast
West Hartford, Connecticut, United States, United States
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FC
Frank Castillo
Colleague at Mimecast
Hanover, Massachusetts, United States, United States
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OW
Oliver Willcox
Colleague at Mimecast
Hampton, New Hampshire, United States, United States
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LT
Lunga T.
Colleague at Mimecast
City Of Johannesburg, Gauteng, South Africa, South Africa
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Rex Black
Colleague at Mimecast
Greater Brisbane Area, Australia
View →
SL
Samuel Lozeau
Colleague at Mimecast
Hopkinton, Massachusetts, United States, United States
View →
CM
Christian Matthew Viray
Colleague at Mimecast
Quezon City, National Capital Region, Philippines, Philippines
View →
SC
Sean Carey
Colleague at Mimecast
East Bergholt, England, United Kingdom, United Kingdom
View →
MF
Mateusz Fornal
Colleague at Mimecast
Cracow Metropolitan Area, Poland
View →
RG
Rakesh G.
Colleague at Mimecast
Hyderabad, Telangana, India, India
View →
RA
Rachael A. Agruso
Colleague at Mimecast
West Hartford, Connecticut, United States, United States
View →
FC
Frank Castillo
Colleague at Mimecast
Hanover, Massachusetts, United States, United States
View →
OW
Oliver Willcox
Colleague at Mimecast
Hampton, New Hampshire, United States, United States
View →
LT
Lunga T.
Colleague at Mimecast
City Of Johannesburg, Gauteng, South Africa, South Africa
View →
FAQ
Frequently asked questions about Jeff Posner
Quick answers generated from the profile data available on this page.
What company does Jeff Posner work for?
Jeff Posner works for Mimecast.
What is Jeff Posner's role at Mimecast?
Jeff Posner is listed as Customer Success Manager at Mimecast at Mimecast.
What is Jeff Posner's email address?
AeroLeads has found 2 work email signals at @sprint.com for Jeff Posner at Mimecast.
Where is Jeff Posner based?
Jeff Posner is based in Norwood, Massachusetts, United States while working with Mimecast.
What companies has Jeff Posner worked for?
Jeff Posner has worked for Mimecast, T-Mobile, and Sprint.
Who are Jeff Posner's colleagues at Mimecast?
Jeff Posner's colleagues at Mimecast include Rex Black, Samuel Lozeau, Christian Matthew Viray, Sean Carey, and Mateusz Fornal.
How can I contact Jeff Posner?
You can use AeroLeads to view verified contact signals for Jeff Posner at Mimecast, including work email, phone, and LinkedIn data when available.
What skills is Jeff Posner known for?
Jeff Posner is listed with skills including Telecommunications, Wireless, Mobile Devices, 4G, M2M, Cdma, Managed Services, and Solution Selling.
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