Some email providers have started blocking emails that are not authenticated. This has been done to tackle phishing attacks However, it’s now harder to make sure that transactional emails are delivered. Transactional emails are the emails sent by your system to your users. For example, when your users forget their passwords and reset them, the emails that are sent to facilitate this process are what we call ‘transactional’. We’ve noticed a sharp increase in people reporting that they’ve not gotten emails as a result of the stricter rules.
For greater compliance, and better overall practice, we’re now offering an authenticated transactional email service. This costs as little as £10 per month and greatly increases deliverability rates. If you are interested, please contact email@example.com