ISPs Like It Hot:
How to Warm Up an IP
Katie Nelson & Aku Desai
Senior Technical Account Managers
February 11, 2014
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Company Overview
• Founded July 2009

$27M venture capital raised
Series B closed Jan 2012

• TechStars graduate
(Boulder, CO)

• 180 employees across 4 offices
– CO: Boulder, Denver
– CA: Anaheim
– Rhode Island, Romania, UK

Angel investors include:
-Scott Petry (Founder, Postini)
-Matt Mullenweg (Founder, Wordpress)

3
Delivering Email at Scale
• Serving 100,000+ customers
across the globe
• Sending over 10 billion emails
per month = 2% of the world’s
non-spam email
• Transactional and marketing
email solutions

4
Today’s Speakers
Aku Desai
Sr. Technical Account Manager
aku.desai@sendgrid.com

Katie Nelson
Sr. Technical Account Manager
katie.nelson@sendgrid.com
: [v.]
Warming up an IP address means that
you start sending low volumes of email
on your dedicated IP and then
systematically increase your email
volume over a period of time.
: [n.]
An IP address that is new and has
never had any mail sent through it, and
therefore has no reputation.
Bad Warm Up
 New IP Address 

Good Warm Up






New IP Address
Who needs to warm
up their IP?
Are You On A Dedicated IP?
Getting Warmer…
160000
140000

Email Volume

120000

Example Schedule:
5 Million
Emails/Month

100000
80000
60000
40000
20000
0

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Day of Sending

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Who should
you start
with?
Engagement
Data







Things
can get
UGLY.
FAST.
Your Reputation
Suffers….
“Clean up on aisle email….”
Keep snowshoeing
where it
belongs…on the
mountain!!
Other
things
to keep
in mind…
--- You Betta’ Check Ya Metrics Mate ---
Looking
forward…

keep it
Takeaways
• Every sender is different- talk to your email
service provider for more personalized
advice
• Warm up helps the ISPs get to know you
as a sender
• We are here to help!
– TAMS
– Support Team
Learn More
Free Guide: How to Warm
Up an IP

IP Warm Up video
Learn More

• SendGrid.com/resources
• SendGrid.com/blog
Questions
ISPs Like It Hot: How to Warm Up an IP