What is SPF, and how do you set it up?
SPF lists the servers allowed to send email for your domain. Learn how an SPF record works, the mistakes that break it, and how to set one up and check it.
5 minute read
Get your email delivered.
Plain-language guides to the things that decide whether your email reaches the inbox.
What is DKIM, and how do you set it up?
DKIM adds a digital signature to your email so receivers can tell it was not altered. Learn how DKIM works, what a selector is, and how to add and check it.
5 minute read
What is DMARC, and how do you roll it out safely?
DMARC tells receivers what to do with mail that fails SPF and DKIM, and sends you reports. Learn the policies, how to start with p=none, and how to move to reject.
6 minute read
Why your emails go to spam, and how to fix it
The common reasons email lands in spam: missing authentication, a new sender, a poor list, complaints and content. A practical checklist to find yours and fix it.
7 minute read
Gmail and Yahoo’s email sender requirements, explained
What Gmail and Yahoo require from anyone who sends email: SPF, DKIM, DMARC, one-click unsubscribe and low spam rates. What counts as a bulk sender and how to comply.
6 minute read
How to warm up a new email sending domain
A new domain has no sending reputation. Learn how to warm it up: start small, send to people who want your mail, increase gradually and watch bounces and complaints.
6 minute read
Transactional email vs marketing email
Transactional email is triggered by something a person did; marketing email is sent to a list. Learn how they differ in purpose, rules, unsubscribe and how to send each.
5 minute read
WordPress contact form emails going to spam: why, and how to fix it
Why WordPress form and WooCommerce emails land in spam or never arrive, and how to fix it: authenticate your domain, send through a real email service, and set the From address correctly.
6 minute read
An email deliverability checklist for small businesses
A practical checklist to get your email delivered: authenticate your domain, warm up, keep your list clean, make unsubscribing easy, watch your complaint rate and test.
4 minute read
How to set up an SPF record for Google Workspace
The exact SPF record for Google Workspace, how to add other senders to it without breaking it, and how to check that it works.
3 minute read
SPF error: too many DNS lookups (the 10 lookup limit)
Why SPF fails with "too many DNS lookups", how to count them, and how to get back under the limit of ten.
3 minute read
WooCommerce emails not sending or going to spam: how to fix it
Order confirmations and password resets not arriving? A step-by-step way to find the cause and fix WooCommerce email delivery.
4 minute read