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  • Writer's pictureTom Kothman

188 Email Spam Words and Phrases to Avoid in Email Subject Lines


Most ESPs have a pre-send filtering stage where the third category is flagged. Based on billions of emails sent through these filters ActiveCampaign has compiled 188 email spam words and phrases organized into four categories. Avoiding these words and phrases, especially in your email subject lines, will go a long way to improving your email deliverability and boost your email open rates.

Email Spam words that make exaggerated claims and promises

1. #1

2. 100% more

3. 100% free

4. 100% satisfied

5. Additional income

6. Be your own boss

7. Best price

8. Big bucks

9. Billion

10. Cash bonus

11. Cents on the dollar

12. Consolidate debt

13. Double your cash

14. Double your income

15. Earn extra cash

16. Earn money

17. Eliminate bad credit

18. Extra cash

19. Extra income

20. Expect to earn

21. Fast cash

22. Financial freedom

23. Free access

24. Free consultation

25. Free gift

26. Free hosting

27. Free info

28. Free investment

29. Free membership

30. Free money

31. Free preview

32. Free quote

33. Free trial

34. Full refund

35. Get out of debt

36. Get paid

37. Giveaway

38. Guaranteed

39. Increase sales

40. Increase traffic

41. Incredible deal

42. Lower rates

43. Lowest price

44. Make money

45. Million dollars

46. Miracle

47. Money back

48. Once in a lifetime

49. One time

50. Pennies a day

51. Potential earnings

52. Prize

53. Promise

54. Pure profit

55. Risk-free

56. Satisfaction guaranteed

57. Save big money

58. Save up to

59. Special promotion

Email Spam words that create unnecessary urgency and pressure

60. Act now

61. Apply now

62. Become a member

63. Call now

64. Click below

65. Click here

66. Get it now

67. Do it today

68. Don’t delete

69. Exclusive deal

70. Get started now

71. Important information regarding

72. Information you requested

73. Instant

74. Limited time

75. New customers only

76. Order now

77. Please read

78. See for yourself

79. Sign up free

80. Take action

81. This won’t last

82. Urgent

83. What are you waiting for?

84. While supplies last

85. Will not believe your eyes

86. Winner

87. Winning

88. You are a winner

89. You have been selected

Email Spam words that look like shady, spammy, or unethical behavior

90. Bulk email

91. Buy direct

92. Cancel at any time

93. Check or money order

94. Congratulations

95. Confidentiality

96. Cures

97. Dear friend

98. Direct email

99. Direct marketing

100. Hidden charges

101. Human growth hormone

102. Internet marketing

103. Lose weight

104. Mass email

105. Meet singles

106. Multi-level marketing

107. No catch

108. No cost

109. No credit check

110. No fees

111. No gimmick

112. No hidden costs

113. No hidden fees

114. No interest

115. No investment

116. No obligation

117. No purchase necessary

118. No questions asked

119. No strings attached

120. Not junk

121. Notspam

122. Obligation

123. Passwords

124. Requires initial investment

125. Social security number

126. This isn’t a scam

127. This isn’t junk

128. This isn’t spam

129. Undisclosed

130. Unsecured credit

131. Unsecured debt

132. Unsolicited

133. Valium

134. Viagra

135. Vicodin

136. We hate spam

137. Weight loss

138. Xanax

Email Spam words that are jargon or legalese (and everything else)

139. Accept credit cards

140. Ad

141. All new

142. As seen on

143. Bargain

144. Beneficiary

145. Billing

146. Bonus

147. Cards accepted

148. Cash

149. Certified

150. Cheap

151. Claims

152. Clearance

153. Compare rates

154. Credit card offers

155. Deal

156. Debt

157. Discount

158. Fantastic

159. In accordance with laws

160. Income

161. Investment

162. Join millions

163. Lifetime

164. Loans

165. Luxury

166. Marketing solution

167. Message contains

168. Mortgage rates

169. Name brand

170. Offer

171. Online marketing

172. Opt in

173. Pre-approved

174. Quote

175. Rates

176. Refinance

177. Removal

178. Reserves the right

179. Score

180. Search engine

181. Sent in compliance

182. Subject to…

183. Terms and conditions

184. Trial

185. Unlimited

186. Warranty

187. Web traffic

188. Work from home

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