Greenby Migration and the Plusnet Relay (relay.plus.net)

[#1]

So I have the Greenby migration email and I have until 05-09-2026 to opt out.

I am going to opt out and I have already scaled down my mailboxes and webspace.

One thing that is unclear is what will happen to the outbound relay "relay.plus.net". Will this keep working after the migration cut-off date and, if so, how long will it stay working for?

Will I be able to continue using relay.plus.net after I hit the opt out button ? If so, for how long ?

I have some work to do to provide another relay, including reconfiguring SPF, etc, for several domains. I am working on it but it would be good to know how long I have to complete this work (or, even, if I can avoid doing it).

Thanks!

[#2]

We are migrated to Greenby I would not be surprised if our Plusnet Members Centre account closed
and access to the Plusnet email platform ended without warning.

I've not seen a single post on what happens if  you opt-out,  no surprise usually that person has
long ago ended their use of Plusnet's email platform & does not care.

I've get cracking on the domains and organising an email service for them.

[#3]

@starfry 

The answer needs to understand context.

If the email account is associated with a current broadband provision, authentication with the relay.plus.com SMTP server ought not to be impacted.  The reality is that for Plusnet accounts, the SMTP server will remain relay.plus.net (using the broadband account credentials) until later in the migration programme.

That is why for users whose email has been migrated and later leave Plusnet find that they can no longer access relay.plus.net - they need to use Greenby's native SMTP server.

If you have an active Plusnet broadband service, the Greenby service is free for 2 years.  Why not just remain with the migration option and discontinue your use of @account.plus.com in the coming months?