Guides
Everything you need to know to land in the inbox. No jargon, no fluff, a few minutes each.
4 min read
SPF (Sender Policy Framework) is a TXT record on your domain that lists the servers allowed to send email as you. Inboxes check it to spot forged mail.
Read4 min read
DKIM (DomainKeys Identified Mail) signs every email with a private key. Inboxes use the public key in your DNS to check the email really came from you and wasn't changed on the way.
Read5 min read
DMARC ties SPF and DKIM to the From address people see, tells inboxes what to do with email that fails, and sends you reports. Gmail and Yahoo require it for bulk senders.
Read6 min read
Deliverability is whether your email reaches the inbox. It comes down to four things: proving who you are, sending to people who want your email, growing volume gradually, and content that doesn't look like spam.
Read3 min read
Transactional email is triggered by an action (a signup, a purchase, a password reset). Marketing email is sent to many people at once to inform or promote. They follow different rules and should be sent separately.
Read3 min read
Inbox providers judge a sender by its history. A new domain has none, so volume should start small and grow as it proves people want its email. Sending limits enforce that gradually.
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