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The Guide

Email guides: SPF, DKIM, DMARC and deliverability

Set up SPF, DKIM and DMARC correctly, handle spam complaints and keep your campaigns out of the junk folder.

Email that does not arrive costs sales. These guides show how to authenticate your domain, add a new sender without breaking your SPF record, read DMARC reports and review cleaned or complaining contacts before your next campaign.

16 articles

Exim incident board showing an isolated SMTP source and controlled recovery.
Email · 2 min

Contain outbound spam after a cPanel SMTP account compromise

Smiley Hoster Team · November 15, 2026
A brand symbol inside an envelope connected to DMARC and certificate checks.
Email · 2 min

BIMI, VMC and CMC: prepare your company logo for Gmail

Smiley Hoster Team · November 14, 2026
DMARC staircase progressing from none through quarantine to reject.
Email · 2 min

Move to DMARC p=reject without blocking legitimate senders

Smiley Hoster Team · November 13, 2026
Three email checkpoints showing identity, consent and reputation.
Email · 2 min

Gmail, Outlook and Yahoo in 2026: check delivery before scaling email

Smiley Hoster Team · November 12, 2026
A customer envelope points to a team inbox marked with a confirmation check.
Email · 5 min

Check where replies to your emails arrive

Smiley Hoster Team · October 26, 2026
An envelope connected to a product page with checks for product, language and offer.
Email · 2 min

Check where your Mailchimp campaign links lead

Smiley Hoster Team · October 25, 2026
Campaign review sheet with three stages: observe, check, and test one change.
Email · 2 min

Review a Mailchimp campaign before your next send

Smiley Hoster Team · October 24, 2026
Two test paths: one address awaits confirmation, the other becomes subscribed after a click.
Email · 2 min

Test double opt-in on your Mailchimp signup form

Smiley Hoster Team · October 23, 2026
Three-step flow showing campaign receipt, unsubscribe confirmation and a check of the contact status.
Email · 5 min

Test Mailchimp unsubscribes before a campaign

Smiley Hoster Team · October 22, 2026
Three checkpoints connect a domain to DNS records and sender validation.
Email · 4 min

Authenticate a Mailchimp domain before a campaign

Smiley Hoster Team · October 21, 2026
Three cards connect a bounced address to a review and a documented decision.
Email · 5 min

Review cleaned Mailchimp contacts before your next campaign

Smiley Hoster Team · September 25, 2026
Investigation worksheet connecting an email alert, the source of contacts and the next-send decision.
Email · 2 min

Investigate a Mailchimp spam complaint before sending again

Smiley Hoster Team · September 25, 2026
Three email services grouped into a single SPF record card.
Email · 2 min

Add an email sender without creating a second SPF record

Smiley Hoster Team · September 24, 2026
A message linked to a DKIM selector and its public DNS key.
Email · 4 min

Verify DKIM signing on an email sent by your website

Smiley Hoster Team · September 23, 2026
Three DMARC steps: prepare the mailbox, observe reports and review discrepancies.
Email · 5 min

Start DMARC reporting on a domain without a policy

Smiley Hoster Team · September 23, 2026
Two envelopes connect to a triage card showing an accepted message and a flagged message.
Email · 2 min

Triage spam across several mailboxes

Smiley Hoster Team · September 22, 2026

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