Which of the following is NOT an in-person marketing strategy?

Sending emails to previous clients is considered a digital or remote marketing strategy rather than an in-person approach. The other options involve direct, face-to-face interaction with potential clients or community members, which is crucial for building personal relationships and trust in the notary business. Joining local business groups, offering to speak at meetings, and hosting booths at community events all facilitate direct engagement, allowing for networking opportunities and immediate feedback from the audience. These in-person strategies are particularly effective in fostering connections, which can lead to referrals and long-term business relationships.