Email Deliverability: A Guide for Organisers

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Share This With Your Attendees

Share the following link with attendees to help them understand where their emails are going and what to do if they are not arriving: Not Receiving Emails from Medtribe?

We know it’s frustrating when attendees report missing emails. Medtribe sends tens of thousands of emails every week across hundreds of organisations, and when an individual email does not arrive, the cause is almost always filtering on the receiving end.

First: confirm their booking exists

Go to Events, find your event, and open the Attendees section. Search for the attendee by name or email. If their booking shows as Booked, the confirmation email was sent at the point of registration.

You can also reassure the attendee that their booking is safe. They can verify it themselves by logging in at medtribe.com/my/bookings.

What to tell the attendee

Most missing emails are in the spam or junk folder. Ask them to:

  1. Check spam and junk. In Outlook, also check the Other tab. In Gmail, check Promotions.
  2. Search for “Medtribe” across their entire mailbox.
  3. Check they used the right email address. They can see their registered email by logging into Medtribe and going to My Account.
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Verification Emails

If a new user cannot receive the account verification email, their account can be manually verified. Raise it at medtribe.com/help and it will be sorted quickly.

Why it happens

NHS organisations use NHSmail, which has strict filtering rules that can flag, delay, or silently drop emails from external senders. This is not specific to Medtribe. Any platform sending into NHS mail infrastructure will encounter it.

Even when emails reach the mail server, they can land in spam or junk, especially if the recipient has never received email from Medtribe before.

Prevent it: get your IT team to whitelist Medtribe

If your organisation regularly has attendees missing emails, the best long-term fix is to whitelist Medtribe at the network level. If your attendees use NHS email, consider asking your IT team to do this before your event goes live.

Share this with your IT team:

  • Domain to allow. medtribe.com
  • From address. *@medtribe.com (wildcard, covers all system emails)
  • Authentication. Medtribe emails are fully authenticated (SPF, DKIM, and DMARC), which means your IT team can verify they are genuine.
  • Sending infrastructure. All emails are sent from dedicated infrastructure in the EU region.

For NHSmail administrators: add medtribe.com to your organisation’s safe senders list, or create a transport rule to bypass spam filtering for emails from @medtribe.com.

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Need More Detail?

If your IT team needs specific IP addresses or additional technical details for whitelisting, raise it at medtribe.com/help.