Whitelisting SparkPost sending IP addresses with Google Apps

April 28, 2017
If you are experiencing delays or other deliverability issues to your domains hosted by Google Apps please whitelist the SparkPost sending IPs using the Google documentation https://support.google.com/a/answer/60751 To find out what SparkPost sending IPs to whitelist depends on whether you are using dedicated IPs or shared IPs. If you are using dedicated IPs then go…
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SPF and ip4 Mechanisms

April 28, 2017
Unfortunately, we do not have the luxury of being assigned large blocks of IP space by our provider, and so we cannot use the ip4 mechanism in our SPF records; this has meant we've had to look for more creative approaches, ones that require extra DNS queries. It would be our preference to not use…
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Optimizing Deliverability and Inbox Placement

April 28, 2017
In order to get the best deliverability and inbox placement rates, you need to establish yourself as a legitimate sender by developing a good reputation with mailbox providers (like Gmail and Hotmail). Here’s how: Permission - only email to the people who have subscribed to receive your mail Transparency - make sure your content is…
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Managing dedicated IP Pools

April 28, 2017
So now you have dedicated IPs. In which IP pools would you like them. Would you like a marketing pool? Would you like a transaction pool? You can manage this in the user interface. In the user interface select account> IP Pools. The default pool is already there for you. (Note: if any sending IPs…
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IP Warm-up Overview

April 28, 2017
# IP Warm-up Definition IP warming is the process of methodically adding campaign volume week-over-week to a new IP Address to establish a positive sending reputation with Internet Services Providers. (ISPs) # IP Warm-up Summary ISPs view email from a new IP Address as suspicious until they establish a positive sending reputation. It takes 4…
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Global Suppression List

April 28, 2017
When deploying an email campaign you may notice that the number of recipients injected may not match the number of recipients targeted.  This is due to suppressions that are applied prior to the actual deployment. Your injection list is first bounced against your own suppression list (opt-outs, hard bounces, spam complaints) and then against SparkPost’s…
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When sending to Gmail subscribers I see this error: “We’ve found that lots of messages from sparkpostmail.com are spam”

April 28, 2017
You are receiving this error because Gmail uses the return-path domain for that error message. However, it is your from domain that the reputation is actually referencing. We have clients sending to Gmail from the same return-path and IPs that are not experiencing inbox issues. # Steps Towards Resolution: Ensure there are no blacklistings for…
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Dedicated IP Pools

April 28, 2017
Dedicated IP addresses are available for any account with the exception of the FREE plan with no credit card details on file. Any new dedicated IP address added to your account will have a neutral initial reputation, which means that you will be responsible for properly warming up your new IP. You can refer to…
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Bounce Classification Codes

April 28, 2017
Following is a list of bounce classification codes and their meanings: Classification Name Description Category 1 Undetermined The response text could not be identified. Undetermined 10 Invalid Recipient The recipient is invalid. Hard 20 Soft Bounce The message soft bounced. Soft 21 DNS Failure The message bounced due to a DNS failure. Soft 22 Mailbox…
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