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An update on email delays from December 16th

Over the weekend, Postmark experienced a massive and sophisticated DDoS attack that resulted in email delays for our customers. Despite the scale of the attack, we didn’t lose any email or data. We are truly sorry about this incident and its impact to you, your teams, and your customers.

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What is transactional email and what is it used for?

One of the questions we hear most often at Postmark is: what is transactional email, and how is it different from other types of email? Well, friends, seeing as we've been dealing with transactional email since 2009, we’re happy to answer that question in lots of detail and with plenty of examples.

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