Best Practices for Sending Legitimate Emails and Avoiding SPAM Filters

These guidelines will help ensure emails you send from Apollo are not wrongfully identified as SPAM by email servers. Since SPAM and bounces (emails rejected upon delivery) go hand-in-hand, these strategies also help improve your emails' delivery rates. They'll also help minimize the frequency of your emails being manually marked as SPAM by people you contact, but that is ultimately up to the discretion of the recipient.

1. Remove Links

• SPAM filters look for links, especially in Step 1 emails (the first time you're emailing a new Contact from your email address). Even your signature is scanned for links, so that can be a culprit and a smart place to ensure you've removed links, in addition to the body of your emails.

2. Remove Images

• Images or attachments, especially in step 1 emails, can activate SPAM blockers and even bounces. Remove these assets and stick to text. Send your beautiful images and attachments in step 3 or below (once you've sent a couple other emails). Again, even images in your signature can cause issues.

3. Don't Apply Special Formatting to your Text

• Simply put, SPAM blockers scan for formatted text, so avoid using different colors, fonts, bolding, italicization, and underlining

4. Keep your Paragraphs Concise

• Lengthy content alone can activate SPAM blockers or even bounces, so keep your wording trim and to-the-point

Optional Additional Measures/Considerations

1. Include unsubscribe links in your email signature. In general, make this decision based on how and why you're emailing your Prospects and if it makes sense to include an opt-out, but our feature allows you to use whatever text/phrase you like and automatically adds the link with your signature on all your Apollo emails automatically. Research shows that recipients are far more likely to use an unsubscribe link instead of marking your emails as Spam (which can affect your overall sending reputation and is therefore a much worse outcome) when they have the choice. 

2. Deactivate click tracking. The functionality of click tracking manipulates links in emails, which SPAM filters can sometimes detect, so disable this feature if you're having issues (open and reply rates are tracked differently and are generally far less of a concern). 

3. Set Up a Custom Tracking Subdomain

Unexpected Words that can Activate SPAM Filters

• Dear (don't use this as a greeting)
• Friend
• Payment
• Cost
• Spend
• Fee
• Best price
• Affordable
• Opportunity
• Bargain
• Free
• Price
• Quote
• Success
• Call
• Credit Card
• Click
• Sale
• Discount
• Guarantee
• Check out this super helpful HubSpot Article for more info on SPAMMY words

Important Notes:

• Even if these tips are followed, keep in mind that spam filtering is always user-specific. So, if someone marks an email as spam, their email provider's spam filtering will update itself to naturally catch similar emails in the future. This explains why two people can receive the same email and encounter different filtering behavior.
• If you get SPAM blocked by a Contact you email, that doesn't mean that the contact email address is not accurate, but rather that it does exist and your email was either automatically or manually marked as unfit or inappropriate for delivery. 

Related Resources

• Steps to Improve Your Sending Reputation