When switching DMARC configuration from none to quarantine, is it best to do so in increments, or all at once?

Email marketer from Sendinblue recommends implementing DMARC gradually. Start with a 'none' policy to monitor your email streams, then move to 'quarantine' and finally 'reject' after analyzing the reports. The phased approach will protect your sender reputation and ensure that legitimate emails are not blocked.

Marketer from Email Geeks advises to be aware of the VMC requirement for BIMI to work for Google Workspace and that Yahoo & Fastmail don't require VMC.

Email marketer from Agari (now Proofpoint) mentions that a transition to DMARC should be phased to mitigate risks. They discuss the best strategy includes a period of monitoring (p=none) before enforcing stricter policies (p=quarantine or p=reject). This helps to identify and resolve any authentication issues before legitimate emails are affected.

Email marketer from Mailjet shares that the best practice is to implement DMARC gradually. Start with a 'none' policy to monitor email streams, then move to 'quarantine' and finally 'reject' after careful analysis of the reports. This phased approach minimizes disruption and ensures legitimate emails are not blocked.

Email marketer from Proofpoint warns against immediately implementing a 'reject' policy without proper monitoring and analysis. Doing so can lead to legitimate emails being blocked, negatively impacting business communications. They advocate for a gradual approach.

Email marketer from StackExchange recommends starting with p=none and monitoring the reports to see who is sending email on your behalf. Once you understand your email flows and have corrected any issues, you can move to p=quarantine and then p=reject.

Email marketer from URIports explains the necessity of the deployment phases. The 'none' policy allows observation without impact, 'quarantine' provides a middle ground for suspicious emails, and 'reject' ensures that unauthorized emails are blocked. They recommend to monitor for at least a week before moving to the next phase.

Email marketer from EasyDMARC emphasizes the importance of continuous monitoring of DMARC reports. Regardless of whether you transition gradually or immediately, analyzing DMARC reports is crucial to identify any potential issues and adjust the policy accordingly to maintain email deliverability.

Email marketer from Valimail emphasizes the need for a measured approach to DMARC enforcement. Suggesting the initial use of a 'none' policy to gain visibility into email authentication practices, followed by a gradual transition to 'quarantine' and then 'reject' as confidence in authentication increases. This prevents disruption of legitimate email flows.

Email marketer from SparkPost explains the importance of starting with a 'none' DMARC policy. According to SparkPost, the initial 'none' stage is for learning and adjusting to avoid immediate issues. This allows the collecting of the reporting before starting to reject email.

Email marketer from Reddit recommends transitioning gradually. The user suggests monitoring DMARC reports closely and adjusting the policy based on what is observed. Starting strict can block legitimate emails, and its difficult to revert.

Expert from Email Geeks recommends going directly to a 100% DMARC policy rather than using a percentage setting, as some ISPs may not respect the percentage. He advises that if you've been monitoring reports and don't see any red flags, you should be safe to implement the full policy. He also confirms there is no warming concept for BIMI.

Expert from Spam Resource, John Levine, shares his experience. After implementing DMARC and moving from p=none to p=quarantine, some legitimate emails started going to spam. He suggests starting with p=none to monitor the effects, so you can act on that information.

Expert from Word to the Wise, Laura Atkins, advises that it is critical to monitor DMARC reports when implementing a DMARC policy. She recommends a phased approach, starting with p=none, monitoring the reports, and gradually moving to stricter policies as you gain confidence in your email authentication setup.

Documentation from RFC7489 specifies that implementing DMARC policies should begin with a monitoring phase ('p=none') to allow domain owners to understand their email ecosystem before enforcing stricter policies. The RFC emphasizes careful analysis of DMARC reports to avoid disrupting legitimate email traffic.

Documentation from Microsoft emphasizes a gradual DMARC rollout to prevent legitimate email from being mistakenly marked as spam. They advise starting with a monitoring-only policy ('p=none') and analyzing the reports before moving to 'quarantine' or 'reject'.

Documentation from DMARC.org recommends a phased deployment of DMARC. Starting with 'p=none' allows you to collect data and identify any legitimate email sources that are not properly authenticated. This is essential before moving to stricter policies like 'quarantine' or 'reject' to avoid unintended consequences.

Documentation from Google Workspace Admin Help explains that a gradual rollout is recommended when moving to stricter DMARC policies. Starting with 'p=none' allows monitoring without impacting deliverability, then moving to 'p=quarantine' or 'p=reject' after analysis to avoid legitimate email being affected.