sequenzymail.com domain, that is the most
likely cause. Its reputation is shared with every other sender on it, so inbox
placement is unpredictable. Verify your own domain and send from an address on
it. If you already do, the cause is how mailbox providers judge your mail, and
Blocked Emails & Spam Placement walks through it.
Check these in order
1
Send from your own domain
In Settings → Domain, add your domain and wait for Verified. Then
set the email’s From field to a sender on that domain. See
Domain Verification.
2
Confirm your DNS records still verify
A record removed during a site move or DNS cleanup is the most common
sudden cause. Open Settings → Domain and check the domain’s status.
Publish a DMARC record if you have none.
3
Judge by a real email, not a test
Test emails carry
[TEST] in the subject, which filters often treat as
spam. A test landing in spam does not mean the campaign will. Send the
real email to your own mailbox at the affected provider instead.4
Look at who you are sending to
Mailbox providers decide from how their users react. Old, purchased or
long-quiet lists get ignored or reported, and the rest of your mail
follows them to spam. Send to people who expect your email, starting with
contacts who opened or clicked recently.
Things that do not fix it
- Waiting, or sending more slowly. A pause teaches the provider nothing new, and a slower schedule only paces the same result.
- A new domain or subdomain. It starts with no history and earns the same result within days.
- A dedicated IP. It changes where your mail leaves from, not how recipients react to it. See Do I send from a shared or a dedicated IP?