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How to check your sending IP reputation

The sending reputation (or "level of trust") of an IP address greatly influences your messages' deliverability in that it directly influences connection-level blocks and sending delays. In other words, a good IP reputation means less bounces and faster delivery.

That's because the IP represents your sending environment, and knowledge about other senders and messages using that same sending environment allows receivers to make upfront assumptions about the quality of your mail too. So how can you tell if your email provider is following best practices for your deliverability?

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Announcing our community writing program

As with our core product, the Postmark blog aims to be an invaluable resource for developers who want to design, send, and receive better and more reliable emails with their applications. To support this goal, we’re looking for writers who can contribute technical content to our blog.

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Recent email delays, and what we’re doing about it

This morning starting at 5:15am outbound emails were queued in our system for all customers. We started processing emails at 7:45am, and by 8:43am all queues were clear and sending was back to normal. Normally we deal with issues like this swiftly, but last night some of our alerting failed, so it took us way too long to become aware of the issue and start working on it. Here’s what we plan to do about it.

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How to check your domain reputation

Now more than ever, domain reputation is a significant factor in deliverability. The better your domain reputation check at a particular receiver, the less likely your future messages will end up rejected or in a spam folder.

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