Recent Posts

Answers to your questions about the new Yahoo and Google technical requirements

• laura
• Industry

On January 9th at 6pm GMT, 1pm EST and 10am PST I’ll be speaking with Nout Boctor-Smith of Nine Lives Digital about the new Yahoo and Google technical requirements.

About My Email

• steve
• Best practices , Delivery improvement , Technical

Happy 2024, everyone!

We’ve released a shiny new tool to let folks self-check a lot of common questions we see about email requirements.

Tis the Season

• laura
• Best practices , Industry

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Yahoogle Requirements Update

• steve
• Best practices , Delivery improvement

Since I wrote about it last month the requirements for bulk senders to Yahoo and Google have changed a little.

Can you STARTTLS?

• steve
• Technical

Email supports TLS (Transport Layer Security), what we used to call SSL.

Customer subdomain authentication

• steve
• Delivery improvement , Technical

EDIT: Now with a production-ready implementation I talk about more here.

Wildcards and DKIM and DMARC, oh my!

• steve
• Industry , Technical

If you’re an ESP with small customers you may have looked at the recent Google / Yahoo requirements around DMARC-style alignment for authentication and panicked a bit.

Deferrals at Microsoft

• steve
• Industry

If you’re seeing a lot of “451 4.7.500 Server busy. Please try again later” from Office365 this morning you’re not alone.

When Asking a Question

• steve
• Industry

A lot of beginner questions about email delivery aren’t about broad strategies for success, or technical details about authentication, or concerns about address acquisition. They’re something like:

New Requirements for Bulk Senders

• steve
• Best practices , Industry

UPDATE: You need to authenticate with both DKIM and SPF.