Deliverability

Bounce Classification Codes

Jun 16, 2016 01:34PM EDT
Bounce Classification Codes Following is a list of bounce classification codes and their meanings: Cla...
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IP Warm-up Overview

Feb 02, 2017 02:12PM EST
IP Warm-up Definition IP warming is the process of methodically adding campaign volume week-over-week to a ne...
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Dedicated IP Pools

Sep 27, 2016 01:47PM EDT
Dedicated IP addresses are available for any account with the exception of the FREE plan with no credit card d...
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Global Suppression List

Feb 02, 2017 02:13PM EST
When deploying an email campaign you may notice that the number of recipients injected may not match the numbe...
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When sending to Gmail subscribers I see this error: "We've f...

Feb 02, 2017 02:16PM EST
You are receiving this error because Gmail uses the return-path domain for that error message. However, it is ...
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Optimizing Deliverability and Inbox Placement

Jan 19, 2017 01:23PM EST
In order to get the best deliverability and inbox placement rates, you need to establish yourself as a legitim...
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Managing dedicated IP Pools

Jun 17, 2016 10:05AM EDT
So now you have dedicated IPs. In which IP pools would you like them. Would you like a marketing pool? Would y...
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SPF and ip4 Mechanisms

Mar 23, 2017 11:18AM EDT
Unfortunately, we do not have the luxury of being assigned large blocks of IP space by our provider, and so we...
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Whitelisting SparkPost sending IP addresses with Google Apps

Apr 19, 2017 12:41PM EDT
If you are experiencing delays or other deliverability issues to your domains hosted by Google Apps please whi...
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