Everything else in email marketing matters less if your email never gets seen. That's why deliverability is a core feature of Send29's email marketing platform, included on every plan, not fine print, and not an upsell.
Campaign pacing out at a steady, reputation-safe rate.
Spam placement gives you almost no signal. The campaign goes out clean, nothing errors, and the only symptom is that opens come in lower than usual. The natural conclusion is that the subject line underperformed. Sometimes the truth is that the email never reached anyone at all, and you spend the next campaign fixing the wrong thing.
Email deliverability is whether your sent emails actually arrive in inboxes rather than spam folders. When email goes to spam, it's usually for one of three reasons:
An email in spam can't be opened or clicked. And it compounds: subscribers who never see your emails eventually stop counting as an engaged audience at all. Protecting inbox placement protects the value of the list you've built, which is why the next three things run on every plan by default.
Protection
Throttled sending means your emails go out at a controlled pace rather than all at once. Steady sending is how mailbox providers expect legitimate senders to behave, so throttling protects your sender reputation on every campaign. It's included automatically on every plan.
Send29 supports SPF, DKIM, and DMARC, so your campaigns go out authenticated. Receiving mail servers can verify your email is genuinely yours and not spoofed, and that verification is one of the strongest signals providers weigh when deciding between the inbox and the spam folder.
The third cause of spam placement, list quality, starts before you ever hit send. Send29 forms build consent in from the first click, with double opt-in, consent tracking, and one-click unsubscribe available on every plan. Turn on double opt-in, and subscribers who confirm twice tend to complain less and open more. That's exactly the list quality providers reward.
Throttled sending and SPF, DKIM and DMARC authentication are included on every Send29 plan. Deliverability isn't what you pay extra for here: a business sending 2,000 emails a month on Free gets exactly the same throttling and authentication as one sending 100,000 on Pro. There is no paid tier for inbox placement. Compare plans →
Once your email lands, the next question is whether anyone actually opened it. See how analytics tracks that →
Any one of these on its own isn't alarming. A pattern across a few campaigns in a row is worth paying attention to.
Send29 handles throttling and authentication automatically, but sender reputation is a two-way street. Keep your list consented and current, honor unsubscribes promptly (built into every Send29 email by default), and avoid sudden jumps in sending volume. Mailbox providers pay attention to sudden changes in behavior more than steady ones.
FAQ
Usually one of three things: a damaged sender reputation, missing SPF, DKIM or DMARC authentication, or a list containing too many people who never really opted in. Send29 addresses all three.
Sending your emails at a controlled pace rather than all at once. Steady sending is how mailbox providers expect legitimate senders to behave, so it protects your sender reputation on every campaign.
No. Throttled sending and SPF, DKIM and DMARC authentication are included on every plan, Free included. A business sending 2,000 emails monthly gets the same handling as one sending 100,000. There is no paid tier for inbox placement.
Not on its own. Irregular sending does more damage than frequent, consistent sending. What mailbox providers react to is sudden change, so a steady rhythm matters more than the number of emails you send.
Not if it's consented. A consented, engaged list of any size is fine. An unconsented one is the risk, regardless of size. That's why Send29 forms build consent in from the first click.
Watch for open rates dropping steadily across several campaigns, bounce rates climbing rather than staying flat, or spam complaints on a campaign people asked for. A pattern across several sends is the signal.
No, and you should be wary of anyone who does. Inbox placement is decided by receiving mail providers, not by the sender. What Send29 does is stack the real factors in your favor.
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Read our sending standards.
