Reduce the risk of your email ending up in the recipient’s spam folder by authenticating your domain with SPF, DKIM and DMARC, and by formatting your messages correctly.
Authentication
Authenticating your domain proves to the recipient’s mail server that your email really comes from you, reducing the chance it’s marked as spam.
SPF (Sender Policy Framework) sets a rule that email from your domain may only be sent from the mail server named in the rule, making it harder for spammers to forge messages from your address. Outgoing email from a domain without SPF is more likely to be treated as spam, and some providers – Gmail, for example – reject mail from domains that don’t have it. We automatically add SPF to your domain if your DNS is managed through our name servers (ns1.loopia.se and ns2.loopia.se). You can check this via whois.loopia.com.
DKIM signing uses a digital signature to show a message comes from a specific, trusted sender – commonly used for newsletters. We automatically create DKIM keys for your domain the first time you set up an email address in the Loopia Customer Zone. You can also add DKIM keys for external senders directly in your DNS zone with us.
DMARC (Domain-based Message Authentication, Reporting & Conformance) decides whether a message is allowed through based on the results of SPF and DKIM, and provides reporting. We recommend setting up DKIM and SPF first before adding DMARC. It’s most useful for larger organisations that need the best possible deliverability and reputation. Note that we don’t offer support for configuring DMARC itself, though we can help add finished DNS records for it.
Message formatting
How you format your email also affects whether it’s flagged as spam. Most providers use automatic spam filters, and since the process is automated, legitimate email is sometimes caught by mistake.
Starting a subject line with phrases like “Hi”, “Important message” or “Act now” increases the risk of being flagged.
Many malicious files are spread by email, so spam filters often react to attachments. We recommend using tools like OneDrive, Dropbox or Google Drive to share files instead, so the recipient gets a link to a secure page. If you do need to send a file by email, PDF is a safer choice than many other formats. Never send an empty message – always include text.
If your message or signature includes a link, make sure it’s secure: it should start with https:// and point to a site that hasn’t been compromised. Your browser will often warn you if a site isn’t considered safe, and you can also look for the padlock icon next to the address to confirm the connection is secure.