Sometimes a test email, or an email to one supporter, lands in spam. That is frustrating, and it is worth checking the basics. The best next step is to look at the broader pattern across your campaign.

Inbox providers like Gmail, Outlook, Yahoo, and Apple Mail make separate filtering decisions for each recipient. One person might see the same campaign in their inbox, another in Promotions, another in spam, and another after a short delay. A single email landing in spam tells you what happened in that inbox, so it is more useful to look at the overall health of your email program.

Raise More helps you send from verified domains, include unsubscribe handling, and monitor overall results like opens, bounces, unsubscribes, and spam complaints. Each inbox provider makes the final placement decision for its own users, so the most useful signal is how your email performs across the full audience.

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Inbox providers generally do not provide a precise reason for why an individual message went to spam. They look at many signals, including your sending history, whether your sending domain is verified, how the recipient has interacted with similar emails, and what is in the message.

Test sends can feel alarming because they are different from a normal bulk send:

Test sends are best for checking formatting, links, merge tags, subject lines, and tone. For deliverability, the full campaign's results will be more useful than a single test inbox.

Deliverability is best judged across real sends over time.

Healthy email programs usually have:

One campaign can underperform for ordinary reasons: timing, subject line, audience, fundraising fatigue, news events, or a message that was less relevant to the list. A deliverability problem is more likely when several campaigns show a continuing drop in opens or clicks, especially alongside higher bounces, complaints, or delays.

The strongest deliverability practice is sending relevant email to people with a real relationship to your campaign or organization. Lists with unclear source or older contact information tend to produce lower engagement, more bounces, and more spam complaints.

Recipients should immediately recognize who the email is from. Use a consistent sender name and a verified email address or domain in Raise More. Domain verification helps inbox providers recognize that Raise More is authorized to send on your behalf.

Be careful with misleading subject lines, excessive punctuation, all-caps urgency, image-only emails, too many unrelated links, URL shorteners, or generic copy that could have come from anyone. Prefer specific, human copy that a real supporter would understand.

An unsubscribe is better than a spam complaint. Every bulk email should include the unsubscribe link required by Raise More, and it should be easy for supporters to find.

Spam complaints and bounces are important health signals. If complaints increase, review whether the audience clearly expected the email, whether the sender name was recognizable, and whether the message matched what supporters expected from you.

Review the basics: sender name, verified sender, subject line, links, formatting, and whether the message looks finished. Then look at the real campaign's results after it sends.

That can happen even in a healthy program. If the campaign has normal opens, low complaints, and normal bounces, it is likely limited to that recipient's inbox.

That is worth investigating. Review list quality, recent imports, send frequency, subject lines, sender identity, bounces, complaints, and whether you recently changed your sending domain or messaging strategy.

The clearest deliverability picture comes from the health of the whole email program.

If one email lands in spam, review the basics and then look at the campaign's overall results. The best long-term deliverability strategy is to send wanted, recognizable, relevant email to a clean audience over time.